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Ïîèñêîâûå ñëîâà: m 94

. . « A4 B6 , », 1995 . , , 90- .

1.
A4 B6 (. 1.1) (). (PbS, PbSe, PbTe) SnTe - 5 NaCl ( Oh - F m 3m ) [8]. [9, 10, 11], . . , , 0 K . NaCl ; 700 K 1- [12, 13, 14], <111> C3v - R3m . SnTe (<100 K), [15, 16]. SnSe, SnS, GeSe GeS 300 K 16 GeS (. . D2h - P nm a) [8], NaCl (. 1.1). , GeTe ( -GeTe) [8], [17] -GeTe 2 , . . D2h - P nnn. 800880 K SnSe SnS 2- -- TlI 17 (. . D2h - C m cm , . . 1.1), GeSe NaCl. , , 18 60 SnTe PbTe GeS [ 18, 19], PbS PbSe , , 22 45 TlI [19]. (, , GeS). , 130215 - CsCl [ 19]. , GeTe [20]. 1

A4 B6 . , : , , , [21]. SnTe, PbTe GeTe [11, 22] [9, 23, 24, 25] -- (TO-) - , , . Pb1-x Snx Te Sn1-x Gex Te [26, 27], [28], [29, 30], [28, 31], [32, 33] [34, 35, 36, 37] . Pb1-x Gex Te , . [38], Pb1-x Gex Te [31] [31, 39] Pb1-x Snx Te. Pb1-x Gex Te, , , Ge . . . 1.1 A4 B6 , . . 1.2 () , , . . . 1.3 , , A4 B6 , Pb1-x Gex Te, .

2

1.1. A4 B6
1945 . . , , , , [21, 40]. . [ 40, 41, 42, 43]. [44], - , , . , TO-
2 TO

= 2 - 2 d , d 0

(1)

2 d 2 -- - d 0 , . 2 d d
2 dd

=

4e 2 ( µv0

+ 2) ·

Z 3

2

,

(2)

Z -- , -- , µ v0 -- [1]. , - (2 d > 2 ) d 0 , TO-. . , -- -- , . , , [ 45]. [46, 47, 48]. , ( ) , , . , . 3

TO- , . , , TO-, TO-, , , [47]. . [33, 49, 50], A4 B6 , . , Pb1-x Snx Te Pb1-x Gex Te [24, 51, 52] [31] ; , [53, 54]. [55] - GeTe [56]. [1], , , , . , «» [57] - , . , , Z , 2 d , d , Z Z i ( ). . NaCl CsCl, [58] , A 4 B6 - . (2), ( = 1745) . , TO- , 45. A4 B6 , , , , 4

. [59, 60, 61, 62, 63], . [64, 65] , p (- s- ). , . . . p- [66], . . , , , . Z (. [33]). A4 B6 , Bi, . . [60, 61, 62, 63] A4 B6 V . p- , - A4 B6 , A B [60]. , A B. , . , ( PbS GeTe) «» A4 B6 . , (SnTe GeTe) «» , Bi, . , [61], [62], Z 0 [63]. [60] A4 B6 . , ( ) , 5

: , , . . - GeTe , . , A4 B6 . A 4 B6 [67, 68, 69, 70, 71]. AN B10-N , - , «» r r s p- A B:
A B A B r = rp - rp , r = (rp + rsA ) + (rp + rsB ).

(3)

r A B p- ( ), r sp- . . 1.2 AN B10-N , r - r [67]. , A4 B6 . , sp- (Bi, Sb, As). ( A B ) (PbS, PbSe, PbTe). sp GeS. GeTe SnTe , V , , . , , . [70] A4 B6 , . , Z [68, 69], [69] [71], [70]. GeTe SnTe [70] . , . A 4 B6 [ 72], 6

[73], [74]. [75] - [76]. A4 B6 [77].

1.2.
1.2.1. A4 B6 , (SnTe, Pb1-x Snx Te) . 1.1 , - , Pb1-x Gex Te (, .) . [5, 78] , Ge Pb PbTe Ge, , . , , (). - () 60- [79] (. [80, 81] [82]). ( Li+ KCl) . , ( ), . , . [81]. . . , [81]. ( -- O N Si, N ) [83] , , . 7

[84]. , (, A1g F1u ), - . LiCl6 KCl , , Li KCl. [85, 86] . , , . , , , «» ( ) , , , « » -- . -- , , , ; , , 5 ( KTaO3 :Nb) 0.09 ( KTaO3 :Li). , . [ 87] , , - . , , , KCl:Li+ , KBr:Li+ RbCl:Ag+ [88, 89, 90]. , , [81]. , ( 11.5 ) [91]. . , , . , . Ge PbTe 1987 . [92] 8

(EXAFS) K- Ge L- Pb . , , Tc Ge ° <111>, 0.8 A. . , [93]. , Tc . (. . ), Tc Tc . , , . , [94], . [95] , . , [86, 96, 97, 98, 99, 100]. , , , ; , [93]. . : 1) , « » ( , , « » [99]) 2) , « » ( « » [ 99]). ( ) () . , « », . «» , , Tloc « » (. ) , . . , « ». «» , . , 9

«» [96, 97]. . [98, 99] . Tc «», , , , . , , , TO- . [95], , ( ) Tc , -- . ( Tc ), . , , [95, 100, 101]. , [95] , , . «», . «» . , , [95] , , , . [86], , , . - , . - (. [97]). KTaO3 :Li. , , , . , -, A4 B6 . [100, 101] , «» . . , . ; [102]. 10

1.2.2. , . , , . 1.2.1, , - , . 60- , , Tg , kTg - , [82, 103]. , , , Tg - ( 1/T ), Tg , . Tg ; , Tg , , . Tg - ; , , , . , OH- , Li+ . , - , T 0 . . , , - , [104] Hdd =
0

2

ij

1 (di dj ) - 3(nij dj )(nij dj ) , ri3 j

(4)

di dj -- , , nij = rij /rij -- rij , rij = |rij | -- i- j -. - , (V (r ) 1/r 3 ), , , . , , T = 0 , . () (). -

11

- [105, 106, 107]. , , , f (E ). , , . , f (E ), [105]. [108] , , . , Tg , 2/3. m , m = f (E ) · |P (E )|dE . (5) Tg m (T ) . , Tg 0 . . [82]. , , T = 0 . , , Tg , « », . , , , , Tg , , (. [109, 110]). , , . . , . (. . ) , . . - «» [ 110]. , , , ,

12

, , . , . 70- , KTaO3 , Na Li, [111]. [104]. , (4) . , , . - , «». «», [ 104], Rc = v/0 , v 0 TO- (2 (q) = 2 + v2 q2 ). . 1.1 0 , - A4 B6 2 , , 0 ° Rc ( 10 A). - [104] 1 Ki, (rij )di dj , (6) Hdd = j 2
i,j ,,

-- , Ki, (rij ) -- j - , r K (r ) = 1
0

+ (

4 2 e -r /Rc + + 2 3 r Rc 3V 1 1 1 1 +2 + - 3n n ) · 3 - e -r /Rc 3 2 r r r Rc 3r Rc -

(7) .

V -- , -- . (7) , K (r ) . , Rc rmin , , (4). , Rc > rmin , , , , (4).

13

, , . , , [ 112] . , , 3 xc · Rc 0.013 3 . xc · Rc 1/47 [113], , TO- 3 xc · Rc . [114] , , , , x < xc . [115] . , , ; - . , , , [116, 117] , . H =-
i,,

(ri )u (ri ),

(8)

-- , u -- - ri , . [116] ( , : u = q P P ) , , , (V (r ) 1/r 2 ), , . , 2/3. 14

[117] . , - + 2
2

>

G 3 nRc

Rc a

,

(9)

-- , n -- , a -- , G 1. . , . , ( Na KTaO3 ), [118]. Pb 1-x Gex Te ( , . 1.2.1, ), . . 1.3 Tc (x) Pb1-x Gex Te. Tc (x) = A(x - xc ) A = 1150 K, = 0.68 xc = 0.005 [119]. K1-x Lix TaO3 [120]. Tc (x) [121], - , ( ). Tc (x) x1/2 . , [122], x 1/3 , «» . , . Pb1-x Gex Te - [123]. ( Ge <111>). Tc (x) TO- . xc , (20 K), , 15

KCl:Li. , Ge Li. [82, 112, 124] , - 3 x · Rc < 0.1, . . , xc . , . [120] , [125], Tc (x) , V (r ) = V0 exp(-r /Rc )/r (. (7)). , , Rc T -1/2 , Tc (x) Tc (x) x2/3 Pb1-x Gex Te K1-x Lix TaO3 . [120] xc = 0.001 , (xc = 0.005), , , , . , . , Tc (x), , (. [126]). Tc , , , Tc . Tc ( ) (x - xc )1/2 . [127], Pb 1-x Gex Te «» . [128] , T1 , () ; - . T2 2- . , « » [85], [128] . , A4 B6 . , ( 16

), , , . PbTe, PbSe PbS , , Ge A4 B6 , , .

1.3. A4 B6
, , A 4 B6 , . -- , . Pb1-x Gex Te -- A4 B6 , Ge. Pb1-x Gex Te . [129], (Tc ) (. 1.3). , Pb1-x Gex Te 2- . [130, 131, 132] . Pb1-x Gex Te . q = 0 , [25, 133, 134] Pb1-x Gex Te. F1u ; Tc A1 E , . TO- [38, 135], Pb1-x Gex Te. , , . ( <100>) Pb1-x Gex Te

17

Tc [133]. , . [129] [133] , Pb1-x Gex Te . Pb1-x Gex Te, [136], Tc , , , [133]. , [127] Tc 18 K, Ge . Ge Pb1-x Gex Te, , (EXAFS) K- Ge [92]. , Ge ° 0.70.8 A <111> , . Tc , Pb-Te. Pb1-x Gex Te [137, 138, 139] [140] ; - [139] [141, 142]. A4 B6 pn-. , . 1.3.1. , , A4 B6 , , Tc . , A4 B6 , , , . (T ) SnTe [52, 143]. , 18

(T ), . Pb1-x Snx Te [31, 144] Pb1-x Gex Te [31, 39] (. 1.4). , , , Tc , , r - , . [143] TO-, Tc - . SnTe [143] , , 10 . [145] , = 2.1 , 12- , TO-, , , . . , [146] A4 B6 . , , - TO- Tc . , TO-, TA- . SnTe , = 5 . Pb1-x Snx Te [147], Pb1-x Gex Te (2048 ) [31]. TO- [148] . , -- . , . , , TO-. A4 B6 , L- , ( ) , . 19

Hint (k , k) = g1 (q · n)(Pq · n), (10)

g1 -- , Pq -- - , k , k -- , q = k - k, n -- k0 . , , Hint (r) = g2 · P 2 (r), (11)

g2 -- . [149], [145] : 1) , TO-, ; 2) A4 B6 - . [150], A4 B6 , [146]. [148, 150] . . , , (q, T ) q kF . , . , T = Tc , :
(1)

m kTc n

-2/3

,

(2)

m (kTc )2 n-1 ,

(12)

m -- , k -- , n -- . Tc Pb1-x Gex Te . [151]. [149, 150, 151] , [98, 99] (. . 1.2). 20

( , Tc |T - Tc |-1/2 ). T = Tc Nd 4 n
-4/3

,

(13)

Nd -- , -- . . [152] (T ) -- , Pb1-x Gex Te Pb1-x Snx Te. p-Pb0.99 Ge0.01 Te 1522 K ( Tc = 37 K) , (. 1.5,). ( ) -- Ge, . , , . [153]. , p-Pb0.99 Ge0.01 Te (Tc = 35 K) [31], . [154] (T ) p-Pb0.985 Ge0.015 Te, Tc 48 K . (T ) (. 1.5,): , , , . , ( Tc ) Tc 0, -- , . --, , , . , . [154] , , T 0. , [119], , . . . . [155] . 21

(T ) p-Pb0.9 Ge0.1 Te [156] , Tc - . Pb1-x Gex Te, , Tc Tc , ( , ) . , . (T /Tc 10%) . (T ) Pb1-x Gex Te n- p- [119]. . , Ge (Tc > 50 K) . Tc (1927 K) , . x = 0.0080.01 10 K, x = 0.006 (Tc < 0) 20 K . -- , x = 0.006 4 K . , . , Pb1-x Gex Te Tc - [ 152], T < Tc . Pb1-x Gex Te Ge, , [157]. , [158]. Tc , . (T ) Pb0.994 Ge0.006 Te (Tc < 0) [119]. , , Tc (T ) . (T ) Pb0.96 Ge0.04 Te, . [159], 22

, 30 K, 0.4 20 /. . , -, , ( x, Tc = 120 K), -, , ( 7 ), . (T ), S- - Pb0.92 Ge0.08 Te [160]. , (T ) Pb1-x Gex Te -- . , , , . , , : , . 1.3.2. A4 B6 , (. . 1.1), , . 60- , 2- Eg , 1- Eg [161]. , A4 B6 . , , L- [3]. (., , [162]) L- T - L-. Pb1-x Gex Te [140], [163] [163, 164] , Tc ( ) Pb1-x Gex Te PbTe, Tc , . . 23

, T -. [165] k · p- A 4 B6 , . Tc D3d C3v T - Cs L-. , , , ( ) . , « » « ». T - ; T - 3- ( ) , . L- . E (k) ( ) ( ) A4 B6 [139]. -- [139], [141, 142] [142] Pb1-x Gex Te . C3v . . T - L- . , T - L-, E x = 0.015 4.2 K 48 510 [139]. [142] pPb1-x Gex Te x < 0.034 E , 18 . , . , , . , , , , . , . Eg . Pb1-x Gex Te Eg [137, 166] pn- 24

[137, 167]. , x , , Tc (. 1.6), . . Tc dEg /dT . Eg (T ), , [161]. Eg (x, T ) Pb1-x Gex Te [25, 135, 138, 139, 168, 169] [170], , . . Tc Eg , [138], , . Pb1-x Gex Te [25, 135, 138, 168] . , (T ) Pb1-x Gex Te SnTe , ( ) , [25, 168] SnTe (12.5 ). [138] Pb1-x Gex Te x > 0.09 (n 3 · 1017 -3 ) , Tc L- T -. , L- T - , , [139, 170]. , Tc , . [ 171] A 4 B6 , - . TO- . Eg , , Eg : - , Eg , TO-, . [172] L- T - , [171, 173], , k = 0 , [173] 25

( k ). , [ 172], [171] L- T -. k = 0 , , . . - . [170], Pb1-x Gex Te , k · p. , . n- , BaF2 , = 56.3 ( ) = 70163 ( ). , C3v - T -, . T - ( ) . L- , , T -. , L- T - (10 ) Pb0.99 Ge0.01 Te. 1.3.3. , 0 (T ) , , ( ). , ( ), [ 21]. , . 1.2, . , ( Tc ) 0 , , -: 0 = C /(Tc - T ), C -- -. d(1/ 0 )/dT Tc 2. 105 K 103 K . A4 B6 ( ) 26

, 0 , . A4 B6 pn-, , - -. pn- , ( p- n-) [ 174]. , p-, n- . , A4 B6 : , Pb1-x Snx Te x > 0.25 p- . , pn- , Eg . , 0 , . - P (E ) Tc pn- . pn-, , 0 . . pn-, Pb1-x Gex Te x = 0.03, 0.045 0.06, [130]. C (T ) , , [129], , [129] . pn- U , . [175] [130] P (E ). , E (P ) = c1 P + c3 P 3 + c5 P 5 , pn T U . c5 , c3 , , Pb1-x Gex Te . C (T ) C (U ) . . [131] pn- , . 27

pn-. E = 2P + 2P 3 , -- -. , (T - Tc ), . , C (U ) pn-. Tc pn- , C -4/3 Vb - U , . . , pn- . U C (T ) . [21]. . C (T ) C (U ) [130, 176]. [177, 178] , Tc pn- Pb1-x Gex Te C -4/3 Vb - U . [179] pn- Pb1-x Gex Te x = 0.020.06 . 0 1/C 2 (U ). 1/ 0 (T ) Tc 2, . , Tc pn- , . C (T ) C (U ) pn- Pb1-x Gex Te x = 0.0270.06, [178] , ( = 3 · 10-11 .-. .), - (C = 6 · 105 K), Ps ( 1 /2 ). 10 K. , x 0 0.06 C , . [180], , , pn-. E 4P . , pn- , ( ) . [178] , C Ps : C = 3.1 · 104 K, Ps = 4.5 /2 . , 28

pn- , pn-, . pn- , pn- - . [155] pn- Pb1-x Gex Te x < 0.02. C (T ) , . , , ( ), C (T ) 30 K. C (T ) pn-. pn- <100>, C (T ) , <111>, . , -- . [155] , - . - 0 p n-, . C (T ) [130, 179], . 0 , -. 0 (TO , LO ) -. Pb1-x Gex Te 0 [38, 132, 181]. [132] 0 , - x < 0.05 p- : 0 , , , . , , TO-. [181] A 4 B6 , 0 , . [182], PbTe TO (T ) Tcext , . 29

TO (T ) , Tcext . 0 ( ), Tcext , ( Pb, Te, ). Tcext , PbTe [183]. , A4 B6 , Pb0.56 Sn0.44 Te 2.5 [184], 68 K. 0 Pb1-x Snx Te , [30]; Pb1-x Gex Te [123]. 0 Pb1-x Gex Te(Ga) [185] Pb1-x Snx Te(In) [186]. 0 A4 B6 , III . , , Pb1-x Gex Te(Ga) 10 [187]. , , Pb1-x Gex Te, Pb1-x Snx Te Sn1-x Gex Te. Pb1-x Gex Se . 3, . Pb1-x Gex Te1-y Sey (x > 0.25) [188, 189]. (. [190]). , - .

[1] .., .. . . -- , 1988, . 154, . 1, . 348. [2] Jantsch W. Dielectric properties and soft modes in semiconducting (Pb,Sn,Ge)Te. In: Dynamical properties of IV-VI compounds (Springer tracts in modern physics, v. 99). Springer-Verlag, 1983, p. 150. 30

[3] .., .., .. PbTe, PbSe PbS. ., , 1968. [4] Bilz H., Bussmann-Holder A. Ferroelectricity in ternary compounds. -- Nuovo Cim. D, 1983, v. 2, N 6, p. 19571963. [5] .., .. (Pb1-x Gex Te). -- , 1977, . 19, . 9, . 17931795. [6] Mikkelsen J.C., Boyce J.B. Extended X-ray-absorption fine-structure study of Ga1-x Inx As random solid solutions. -- Phys. Rev. B, 1983, v. 28, N 12, p. 71307140. [7] Martins J.L., Zunger A. Bond lengths around isovalent impurities and in semiconductor solid solutions. -- Phys. Rev. B, 1984, v. 30, N 10, p. 6217 6220. [8] .., .. AIV BVI . ., , 1975. [9] Pawley G.S., Cochran W., Cowley R.A., Dolling G. Diatomic ferroelectrics. -- Phys. Rev. Lett., 1966, v. 17, N 14, p. 753756. [10] Bate R.T., Carter D.L., Wrobel J.S. Paraelectric behavior of PbTe. -- Phys. Rev. Lett., 1970, v. 25, N 3, p. 159162. [11] Alperin H.A., Pickart S.J., Rhyne J.J., Minkiewicz V.J. Softening of the transverse-optic mode in PbTe. -- Phys. Lett. A, 1972, v. 40, N 4, p. 295296. [12] Goldak J., Barrett C.S., Innes D., Youdelis W. Structure of alpha GeTe. -- J. Chem. Phys., 1966, v. 44, N 9, p. 33233325. [13] .., .. -GeTe. -- , 1967, . 12, . 1, . 3741. [14] Steigmeier E.F., Harbeke G. Soft phonon mode and ferroelectricity in GeTe. -- Solid State Commun., 1970, v. 8, N 16, p. 12751278. [15] Muldawer L. The low temperature transformation in SnTe. -- Bull. Am. Phys. Soc., 1971, v. 16, N 1, p. 84. [16] Iizumi M., Hamaguchi Y., Komatsubara K.F., Kato Y. Phase transition in SnTe with low carrier concentration. -- J. Phys. Soc. Jap., 1975, v. 38, N 2, p. 443449. [17] .., .. . -- . . . ., 1982, . 18, . 4, . 581585. 31

[18] Kafalas J.A., Mariano A.N. High-pressure phase transition in tin telluride. -- Science, 1964, v. 143, N 3609, p. 952. [19] Chattopadhyay T., Werner A., von Schnering H.G., Pannetier J. Temperature and pressure induced phase transition in IV-VI compounds. -- Revue Phys. Appl., 1984, v. 19, N 9, p. 807813. [20] Hein R.A., Gibson J.W., Mazelsky R., Miller R.C., Hulm J.K. Superconductivity in germanium telluride. -- Phys. Rev. Lett., 1964, v. 12, N 12, p. 320322; .., .., .., .., .. PbTe PbSe . -- , 1975, . 22, . 4, . 225229; .., .., .. . -- , 1981, . 23, . 8, . 25102512. [21] ., . . . . ., , 1981. [22] Elcombe M.M. The crystal dynamics of lead sulphide. -- Proc. Roy.Soc.A, 1967, v. 300, N 1461, p. 210217. [23] Sugai S., Murase K., Kawamura H. Observation of soft TO-phonon in SnTe by Raman scattering. -- Solid State Commun., 1977, v. 23, N 2, p. 127129. [24] Sugai S., Murase K., Katayama S., Takaoka S., Nishi S., Kawamura H. Carrier density dependence of soft TO-phonon in SnTe by Raman scattering. -- Solid State Commun., 1977, v. 24, N 5, p. 407409. [25] Murase K., Sugai S. Raman scattering from soft TO-phonon in IV-VI compound semiconductors. -- Solid State Commun., 1979, v. 32, N 1, p. 8993. [26] Dolling G., Buyers W.J.L. Soft modes and Landau transitions in Pb1-x Snx Te alloys. -- J. Nonmetals, 1973, v. 1, p. 159164. [27] Daughton W.J., Tompson C.W., Gtrmen E. Lattice instability and phonon lifetimes in Pb1-x Snx Te alloys. -- J. Phys. C, 1978, v. 11, N 8, p. 1573 1581. [28] Shimada T., Kobayashi K.L.I., Kato Y., Katayama Y., Komatsubara K.F. Soft-phonon-induced anomalies in resistivity, Hall coefficient and Raman scattering intensity in Pb1-x Snx Te. -- Proc. 13th Int. Conf. Phys. Semicond. (Rome, 1976), p. 314317. [29] Takano S., Hotta S., Kawamura H., Kato Y., Kobayashi K.L.I., Komatsubara K.F. Studies of dielectric properties and band parameters of nPb1-x Snx Te by magnetoplasma waves. -- J. Phys. Soc. Jap., 1974, v. 37, N 4, p. 10071015.

32

[30] Nishi S., Kawamura H., Murase K. Study of lattice instability by mmwave magnetoplasma reflection in PbTeSnTe compound semiconductors. -- Phys. Stat. Sol. (b), 1980, v. 97, N 2, p. 581590. [31] Takaoka S., Murase K. Anomalous resistivity near the ferroelectric phase transition in (Pb,Ge,Sn)Te alloy semiconductors. -- Phys. Rev. B, 1979, v. 20, N 7, p. 28232833. [32] Volkov V.L., Litvinov V.I., Baginskii V.M., Tovstyuk K.D. The soft mode and phase transition in Pb1-x Snx Te. -- Solid State Commun., 1976, v. 20, N 8, p. 807809. [33] Kawamura H. Electron-phonon interaction induced phase transition in IV-VI compounds. -- Proc. 3d Int. Conf. Phys. Narrow Gap Semicond. (Warszawa, 1977), p. 724. [34] Bierly J.N., Muldawer L., Beckman O. The continuous rhombohedralcubic transformation in GeTeSnTe alloys. -- Acta Metall., 1963, v. 11, N 5, p. 447454. [35] Lefkowitz I., Shields M., Dolling G., Buyers W.J.L., Cowley R.A. The transition in SnTeGeTe alloys. -- J. Phys. Soc. Jap., 1970, v. 28 (Suppl.), p. 249251. [36] Rehwald W., Lang G.K. Ultrasonic studies of phase transitions in the tin telluride germanium telluride system Snx Ge1-x Te. -- J. Phys. C, 1975, v. 8, N 20, p. 32873296. [37] Clarke R. X-ray study of the structural phase transition in Snx Ge Phys. Rev. B, 1978, v. 18, N 9, p. 49204926.
1-x

Te. --

[38] Jantsch W., Lopez-Otero A., Bauer G. Submillimetre spectroscopy of Pb1-x Gex Te. -- Infrared Phys., 1978, v. 18, N 5/6, p. 877881. [39] Murase K., Sugai S., Takaoka S., Katayama S. Study on the phase transition of IV-VI compound alloy semiconductors. -- Proc. 13th Int. Conf. Phys. Semicond. (Rome, 1976), p. 305308. [40] .., .., .., .., .., .. . ., , 1971. [41] .. . -- , 1949, . 38, . 4, . 490525. [42] ., . . ., , 1958. [43] .. . ., , 1973. 33

[44] Slater J.C. The Lorentz correction in barium titanate. -- Phys. Rev., 1950, v. 78, N 6, p. 748761. [45] Lucovsky G., Martin R.M., Burstein E. Localized effective charges in diatomic crystals. -- Phys. Rev. B, 1971, v. 4, N 4, p. 13671374. [46] Kristoffel N., Konsin P. Pseudo-Jahn-Teller effect and second order phase transitions in crystals. -- Phys. Stat. Sol., 1967, v. 21, N 1, p. K39K43. [47] .., .. . -- , 1976, . 120, . 3, . 507510. [48] .., .. . ., , 1983. [49] Kawamura H, Katayama S., Takano S., Hotta S. Dielectric constant and soft mode of Pb1-x Snx Te. -- Solid State Commun., 1974, v. 14, N 3, p. 259261. [50] Kawamura H. Phase transition in IV-VI compounds. -- In: Lect. Notes in Phys., 1980, v. 133, p. 470494. [51] Kawamura H., Murase K., Nishikawa S., Nishi S., Katayama S. Dielectric constant and soft mode of Pb1-x Snx Te by magnetoplasma reflection. -- Solid State Commun., 1975, v. 17, N 3, p. 341344. [52] Kobayashi K.L.I., Kato Y., Katayama Y., Komatsubara K.F. Carrierconcentration-dependent phase transition in SnTe. -- Phys. Rev. Lett., 1976, v. 37, N 12, p. 772774. [53] Volkov V.L., Litvinov V.I. Magnetic-field-induced displacive phase transition in IV-VI compounds. -- Phys. Lett. A, 1975, v. 75, N 5, p. 398400. [54] .., .. A4 B6 : . -- , 1983, . 25, . 1, . 136-143. [55] .., .. . -- , 1974, . 19, . 2, . 186195. [56] .. - GeTe. -- , 1978, . 20, . 12, . 36213626. [57] .. . -- , 1985, . 27, . 9, . 26732682. [58] .. - A4 B6 . -- , 1986, . 28, . 4, . 983990. [59] .., .. A4 B6 . -- , 1973, . 64, . 6, . 21842195. 34

[60] .., .. A4 B6 . -- , 1978, . 75, . 4, . 13621379. [61] .., .., .. A4 B6 . -- , 1982, . 24, . 2, . 415422. [62] .., .. A4 B6 . -- , 1982, . 24, . 11, . 32933297. [63] .., .. A4 B6 . -- , 1983, . 25, . 6, . 18031811. [64] Lin P.J., Kleinman L. Energy bands of PbTe, PbSe and PbS. -- Phys. Rev., 1966, v. 142, N 2, p. 478489. [65] Martinez G., Schluter M., Cohen M.L. Electronic structure of PbSe and PbTe. 1. Band structures, densities of state and effective masses. -- Phys. Rev. B, 1975, v. 11, N 2, p. 651659. [66] Lucovsky G., White R.M. Effects of resonance bonding on the properties of crystalline and amorphous semiconductors. -- Phys. Rev. B, 1973, v. 8, N 2, p. 660667. [67] Littlewood P.B. Structure and bonding in narrow gap semiconductors. -- CRC Critical Reviews in Solid State and Materials Science, 1984, v. 11, issue 3, p. 229285. [68] Littlewood P.B., Heine V. The infrared effective charge in IV-VI compounds. 1. A simple one-dimensional calculation. -- J. Phys. C, 1979, v. 12, N 21, p. 44314439. [69] Littlewood P.B. The infrared effective charge in IV-VI compounds. 2. A three dimensional calculation. -- J. Phys. C, 1979, v. 12, N 21, p. 4441 4457; The dielectric constant of cubic IV-VI compounds. -- ibid., p. 44594468. [70] Littlewood P.B. The crystal structure of IV-VI compounds: 1. Classification and description; 2. A microscopic model for cubic/rhombohedral materials. -- J. Phys. C, 1980, v. 13, N 26, p. 48554892. [71] Littlewood P.B. Phase transitions and optical properties of IV-VI compounds. -- In: Lect. Notes Phys., 1982, v. 152, p. 238246. [72] Natori A. Displacive phase transition in narrow-gap semiconductors. -- J. Phys. Soc. Jap., 1976, v.40, N 1, p. 163-171; Effect of lattice anharmonicity on displacive phase transition in narrow-gap semiconductors. -- ibid., 1976, v. 41, N 3, p. 782786. 35

[73] .., .. . -- , 1976, . 18, . 4, . 10661072; . -- , 1976, . 18, . 11, . 33403347. [74] Sakai K. Vibronic theory of a structural phase transition and a tricritical point in IV-VI compounds. -- Phys. Rev. B, 1986, v. 34, N 11, p. 8019 8037. [75] Porod W., Vogl P., Bauer G. Lattice dynamics and structure of semiconductors. -- Proc. 15th Int. Conf. Phys. Semicond. (Kyoto, 1980). In: J. Phys. Soc. Jap., 1980, v. 49 (Suppl. A), p. 649652; Porod W., Vogl P. Lattice dynamics and phase transitions in IV-VI compounds. -- In: Lect. Notes Phys., 1982, v. 152, p. 247251. [76] Bussmann-Holder A., Bilz H., Kress W. Ferroelectric phase transition in IV-VI semiconductors. -- Proc. 15th Int. Conf. Phys. Semicond. (Kyoto, 1980). -- In: J. Phys. Soc. Jap., 1980, v. 49 (Suppl. A), p. 737744; Bussmann-Holder A., Bilz H., Benedek G. Application of the polarizability model to various displacive-type ferroelectric systems. -- Phys. Rev. B, 1989, v. 39, N 13, p. 92149223. [77] Enders P. Structure and bonding in cubic IV-VI Phys. Stat. Sol. (b), 1983, v. 120, N 2, p. 735-744; ibid., N 1, p. 3946; ibid., 1984, v. 121, N 2, p. 461470; ibid., N 2, p. 449457; ibid., 1985, v. 128, N 1, p. 7582; ibid., N 1, p. 8999; ibid., 1985, v. 130, N 2, p. 511516. crystals. 1984, v. 1985, v. 1985, v. -- 121, 127, 129,

[78] .., .. NaCl. -- , 1975, . 17, . 8, . 22092216. [79] Lombardo G., Pohl R.O. Electrocaloric effect and a new type of impurity mode. -- Phys. Rev. Lett., 1965, v. 15, N 7, p. 291293. [80] .. . ., , 1974. [81] .. . . ., ., , 1978, . 2, . 21. [82] .., .. -- . -- , 1985, . 146, . 3, . 459491. [83] Pantelides S.T., Harrison W.A., Yndurain F. Theory of off-center impurities in semiconductors. -- Phys. Rev. B, 1986, v. 34, N 8, p. 60386040.

36

[84] .., .., .. . -- , 1973, . 15, . 7, . 2048 2052. [85] Hock K.H., Thomas H. Statics and dynamics of «soft» impurities in a crystal. -- Zs. Phys. B, 1977, Bd. 27, N 3, s. 267271. [86] Hock K.H., Schafer R., Thomas H. Dynamics of a locally distorted impurity in a host crystal with displacive phase transition. -- Zs. Phys. B, 1979, Bd. 36, N 2, s. 151160. [87] Narayanamurti V., Pohl R.O. Tunneling states of defects in solids. -- Rev. Mod. Phys., 1970, v. 42, N 2, p. 201236. [88] Kahan A.M., Sievers A.J. High pressure study of a lattice resonance in the far infrared. -- Phys. Lett. A, 1971, v. 37, N 3, p. 203204. [89] Kahan A.M., Sievers A.J. Effect of hydrostatic pressure on the far infrared absorption spectrum of KCl:Li+ . -- Bull. Amer. Phys. Soc., 1972, v. 17, N 3, p. 239. [90] Bridges F., Chow D. Observation of a microwave transition from an oncenter to off-center ionic configuration. -- Phys. Rev. Lett., 1985, v. 54, N 14, p. 15321535. [91] Hochli U.T., Weibel H.E., Rehwald W. Elastic and dielectric dispersion in the dipole glass K1-x Lix TaO3 . -- J. Phys. C, 1982, v. 15, N 30, p. 6129 6140. [92] Islam Q.T., Bunker B.A. Ferroelectric transition in Pb1-x Gex Te: extended X-ray-absorption fine-structure investigation of the Ge and Pb sites. -- Phys. Rev. Lett., 1987, v. 59, N 23, p. 27012704. [93] ., . . . ., ., , 1984. [94] Axe J.D., Shapiro S.M., Shirane G., Riste T. Neutron scattering studies of soft mode dynamics. -- In: Anharmonic lattices, structural transitions and melting. (NATO Adv.Study Inst.Ser., Ser. E, 1974), p. 2337. [95] Halperin B.I., Varma C.M. Defects and the central peak near structural phase transitions. -- Phys. Rev. B, 1976, v. 14, N 9, p. 40304044. [96] Thomas H. Dynamics of defects at structural phase transitions. -- Ferroelectrics, 1981, v. 35, p. 8997. [97] Schmidt H., Schwabl F. Localized modes and central peak at displacive phase transitions. -- Phys. Lett. A, 1977, v. 61, N 7, p. 476478.

37

[98] .., .., .., .. . -- , 1979, . 76, . 1, . 345 368. [99] .., .., .. . -- , 1983, . 85, . 4, . 14231436. [100] .., .., . . ., , 1984. [101] .., ., .. . -- , 1978, . 20, . 5, . 14691476. [102] Tolwdano J.-C. Dwfauts et transitions de phase structurales. -- Ann. Telecommun., 1984, v. 39, N 7-8, p. 277297. [103] Vugmeister B.E., Glinchuk M.D. Dipole glass and ferroelectricity in random-site electric dipole systems. -- Rev. Mod. Phys., 1990, v. 62, N 4, p. 9931026. [104] .., .. . -- , 1980, . 79, . 3, . 947952. [105] Klein M.W., Held C., Zuroff E. Dipole interactions among polar defects: a self-consistent theory with application to OH- impurities in KCl. -- Phys. Rev. B, 1976, v. 13, N 8, p. 35763589. [106] Aharony A. Absence of ferromagnetic long range order in random isotropic dipolar magnets and in similar systems. -- Solid State Commun., 1978, v. 28, N 8, p. 667670. [107] Sadreev A.F. Absence of long-range order in a dipole system. -- Phys. Lett. A, 1986, v. 115, N 5, p. 193195. [108] Fischer B., Klein M.W. New kind of phase transition in randomly distributed tunneling dipoles in alkali halides. -- Phys. Rev. Lett., 1976, v. 37, N 12, p. 756759. [109] .., .. . -- . . , 1984, . 10, . 2345. [110] .. . ., , 1989. [111] Yacoby Y., Just S. Differential Raman scattering from impurity soft modes in mixed crystals of K1-x Nax TaO3 and K1-x Lix TaO3 . -- Solid State Commun., 1974, v. 15, N 4, p. 715718. 38

[112] .. . -- , 1984, . 26, . 8, . 24482455. [113] .., .. . -- , 1982, . 24, . 3, . 860865. [114] Vugmeister B.E., Stephanovich V.A. New random field theory for the concentrational phase transitions with appearance of long-range order. Application to the impurity dipole systems. -- Solid State Commun., 1987, v. 63, N 4, p. 323327. [115] .., .. . - . -- , 1989, . 31, . 11, . 5962. [116] .., .. . -- , 1988, . 30, . 4, . 11971199. [117] .., .. . -- . , . ., 1989, . 53, . 7, . 12611264. [118] Glinchuk M.D., Smolyaninov I.M. Structural phase transition induced by elastic fields of impurities. -- Phase Transitions, 1990, v. 29, p. 95103. [119] Takano S., Kumashiro Y., Tsuji K. Resistivity anomalies in Pb1-x Gex Te at low temperatures. -- J. Phys. Soc. Jap., 1984, v. 53, N 12, p. 4309 4314. [120] .. A4 B6 . -- , 1987, . 29, . 7, . 22062209. [121] .., .. . -- , 1979, . 21, . 4, . 12631265. [122] .. , . -- , 1985, . 27, . 4, . 11901193. [123] Katayama S., Murase K. Role of local displacement of Ge ions on structural instability in Pb1-x Gex Te. -- Solid State Commun., 1980, v. 36, N 8, p. 707711. [124] .., .. . -- , 1985, . 27, . 7, . 20342038. 39

[125] .., .. . -- , 1978, . 126, . 2, . 233268. [126] Hochli U.T. Experimental studies on quantum ferroelectrics. -- Ferroelectrics, 1981, v. 35, p. 1730. [127] Yaraneri H., Grassie A.D.C., Loram J.W. Coupled phase transitions in Pb1-x Gex Te. -- In: Lect. Notes in Phys., 1982, v. 152, p. 270274. [128] .. Pb1-y Gey Te. -- , 1984, . 26, . 4, . 11841186. [129] Hohnke D.K., Holloway H., Kaiser S. Phase relations and transformations in the system PbTeGeTe. -- J. Phys. Chem. Solids, 1972, v. 33, N 11, p. 20532062. [130] Antcliffe G.A., Bate R.T., Buss D.D. On the ferroelectric nature of the cubic--rhombohedral phase transition in Pb1-x Gex Te. -- Solid State Commun., 1973, v. 13, N 7, p. 10031006. [131] .., .., .. p n- . -- , 1978, . 12, . 5, . 850854. [132] Jantsch W., Mitter H., Lopez-Otero A. Anomalies of the static dielectric constant of Pb1-x Gex Te. -- Z. Phys. B, 1981, v. 41, N 4, p. 287290. [133] Sugai S., Murase K., Tsuchihira T., Kawamura H. Interaction of the TOphonon with the acoustic phonons near the phase transition temperature in Pb1-x Gex Te. -- J. Phys. Soc. Jap., 1979, v. 47, N 2, p. 539546. [134] Humer-Hager T., Bauer G., Brandmuller J. Observation of soft TO phonon modes in Pb1-x Gex Te by Raman scattering in the near-infrared ( = 1.064 µm). -- J. Phys. C, 1986, v. 19, N 13, p. 21532159. [135] Jantsch W., Bauer G., Lopez-Otero A. The ferroelectric phase transition in Pb1-x Gex Te mixed crystals. -- Proc. 14th Int. Conf. Phys. Semicond. (Edinburgh, 1978). -- In: Inst. Phys. Conf. Ser. N 43, p. 445448. [136] Sugimoto N., Matsuda T., Hatta I. Specific heat capacity of Pb1-x Gex Te at their structural phase transition. -- J. Phys. Soc. Jap., 1981, v. 50, N 5, p. 15551559. [137] .., .., .. Pb1-x Gex Te. -- . . ., 1978, . 9, . 3642. [138] Jantsch W. Anomalies of the refractive index and the optical energy gap of ferroelectric Pb1-x Gex Te. -- Z. Phys. B, 1980, v. 40, N 3, p. 193198.

40

[139] Takaoka S., Murase K. Band edge structure transformation due to ferroelectric transition in Pb1-x Gex Te alloy semiconductors. -- J. Phys. Soc. Jap., 1982, v. 51, N 6, p. 18571864. [140] Burkhart J., Bauer G., Jantsch W., Lopez-Otero A. Magnetoplasmareflectivity of Pb1-x Gex Te. -- Proc. 4th Int. Conf. infrared and millimeter waves and their applications, 1979, p. 248249. [141] Tsuji K., Takano S. Quantum oscillations of velocity of sound in pPb1-x Gex Te in rhombohedral phase. -- J. Phys. Soc. Jap., 1982, v. 51, N 6, p. 18511856. [142] Tsuji K., Kumashiro Y., Takano S. Energy surfaces and domain structure of Pb1-x Gex Te in the rhombohedral phase. -- J. Phys. Soc. Jap., 1984, v. 53, N 4, p. 13971405. [143] Kobayashi K.L.I., Kato Y., Katayama Y., Komatsubara K.F. Resistance anomaly due to displacive phase transition in SnTe. -- Solid State Commun., 1975, v. 17, N 7, p. 875878. [144] Suski T., Baj M., Zuczkowski W., Kobayashi K.L.I., Komatsubara K.F. Pressure induced phase transition in PbSnTe. -- Solid State Commun., 1979, v. 30, N 2, p. 7780. [145] Katayama S. Anomalous resistivity in structural phase transition of IV-VI compound: p-SnTe. -- Solid State Commun., 1976, v. 19, N 4, p. 381383. [146] Katayama S., Mills D.L. Theory of anomalous resistivity associated with structural phase transitions in IV-VI compounds. -- Phys. Rev. B, 1980, v. 22, N 1, p. 336352. [147] Murase K. Ferroelectric lattice instabilities in narrow band gap semiconductors. -- Ferroelectrics, 1981, v. 35, N 1-4, p. 6772. [148] .., .., .. . -- , 1981, . 23, . 3, . 690698. [149] Epifanov Yu.N., Levanyuk A.P., Levanyuk G.M. Interaction of carriers with TO-phonons and electrical conductivity of ferroelectrics. -- Ferroelectrics, 1981, v. 35, p. 199202. [150] .. . . . . . .-. . ., 1982. [151] .., .. . -- , 1981, . 23, . 5, . 14731476.

41

[152] Yaraneri H., Grassie A.D.C., Yusheng He, Loram J.W. A quasi-Kondo effect in Pb1-x Gex Te alloys. -- J. Phys. C, 1981, v. 14, N 15, p. L441 444. [153] Cochrane R.W., Harris R., Strom-Olson J.O., Zuckermann M.J. Structural manifestations in amorphous alloys: resistance minima. -- Phys. Rev. Lett., 1975, v. 35, N 10, p. 676679. [154] Suski T., Takaoka S., Murase K., Porowski S. New phenomena of low temperature resistivity enhancement in quantum ferroelectric semiconductors. -- Solid State Commun., 1983, v. 46, N 3, p. 259262. [155] Suski T., Takaoka S., Ishii K., Murase K. High-pressure investigations of ferroelectric phase transition in PbGeTe. -- J. Phys. C, 1984, v. 17, N 12, p. 21812192. [156] Suski T., Ortalli I., Szczerbakow A. Anomalous resistivity in the ferroelectric phase transition in Pb1-x Gex Te. -- Lett. Nuovo Cim., 1984, v. 39, N 6, p. 8185. [157] Katayama S., Maekawa S., Fukuyama H. Kondo-like effect of atomic motion on resistivity in Pb1-x Gex Te. -- J. Phys. Soc. Jap., 1987, v. 56, N 2, p. 697-705. [158] Kondo J. Localized atomic states in metals. 2. Resistivity and free energy. -- Physica B+C, 1976, v. 84, N 2, p. 207212. [159] .., .., .. AIV BVI , . -- , 1989, . 31, . 7, . 272276. [160] Valassiades O., Pavlidou E., Economou N.A. Non-linear transport properties of the PbTeGeTe system. -- Solid State Commun., 1987, v. 62, N 7, p. 503507. [161] .. -. ., , 1976. [162] .., .. . ., , 1972. [163] Lewis A.V., Nicholas R.J., Ramage J.C., Bauer G., Stradling R.A., LopezOtero A. Effective masses in n- and p-type Pb1-x Gex Te. -- J. Phys. C, 1980, v. 13, N 4, p. 561569. [164] Lewis A.V., Nicholas R.J., Ramage J.C., Bauer G., Lopez-Otero A. Cyclotron resonance above and below the structural phase transition in Pb1-x Gex Te. -- J. Phys. C, 1980, v. 13, N 17, p. L443445. [165] Bangert E. Band structure of Pb1-x Gex Te in the C3v -phase. -- In: Lect. Notes in Phys., 1982, v. 152, p. 216220. 42

[166] Antcliffe G.A., Parker S.G., Bate R.T. CW operation and nitric oxide spectroscopy using diode lasers of Pb1-x Gex Te. -- Appl. Phys. Lett., 1972, v. 21, N 10, p. 505507. [167] Antcliffe G.A., Chapman R.A. Diffused junction photovoltaic infrared detectors using Pb1-x Gex Te with 0.05 < x < 0.11. -- Appl. Phys. Lett., 1975, v. 26, N 10, p. 576577. [168] Murase K., Sugai S., Higuchi T., Takaoka S., Fukunaga T., Kawamura H. Band-gap and phase transformation in IV-VI semiconductors. -- Proc. 14th Int. Conf. Phys. Semicond. (Edinburgh, 1978). In: Inst. Phys. Conf. Ser. N 43, p. 437440. [169] .., .. Pb1-x Gex Te . -- , 1982, . 24, . 7, . 22132215. [170] Bangert E., Bauer G., Fantner E.J., Pascher H. Magnetooptical investigations of phase-transition-induced band-structure changes of Pb1-x Gex Te. -- Phys. Rev. B, 1985, v. 31, N 12, p. 79587978. [171] .. - AIV BVI . -- , 1982, . 24, . 5, . 13211327. [172] Yusheng H., Grassie A.D.C. The electronic band structure of Pb1-x Snx Te alloys. 2. Temperature dependence through the structural and band inversion transitions. -- J. Phys. F, 1985, v. 15, N 2, p. 337361. [173] Bauer G., Jantsch W., Bangert E. Band edge structure of ferroelectric IV-VI compounds. -- In: Festkorperprobleme, 1983, v. 23, p. 2748. [174] - .., .. . ., 1977. [175] Bate R.T. Electrical measurements of dielectric properties of IV-VI alloys. -- Ferroelectrics, 1977, v. 17, N 12, p. 351356. [176] .., .., .. Pb1-x Gex Te. -- . . ., 1977, . 6, . 3439. [177] .., .., .. . -- . . ., 1978, . 10, . 4751. [178] .., .., .. AIV BVI . -- , 1980, . 22, . 8, . 25162518.

43

[179] .., .., .., .. pn- Pb1-x Gex Te. -- , 1978, . 12, . 6, . 11321137. [180] .., .., .. pn- . -- , 1982, . 16, . 3, . 440446. [181] Jantsch W. Dielectric properties of (Pb,Sn,Ge)Te -- influence of defects. -- In: Lect. Notes in Phys., 1982, v. 152, p. 226237. [182] Bauer G., Burkhard H., Jantsch W., Unterleitner F., Lopez-Otero A., Schleussner G. Influence of free carriers and lattice defects on the TOphonon softening in PbTe. -- Proc. Int. Conf. on lattice dynamics (Paris, 1977), p. 669672. [183] Jantsch W., Lopez-Otero A. Influence of lattice defects on the paraelectric behaviour of PbTe. -- Proc. 13th Int. Conf. Phys. Semicond. (Rome, 1976), p. 487490. [184] Suski T., Konczykowski M., Leszczynski M., Lesueur D., Dural J. Ferroelectric phase transition in electron irradiated PbSnTe crystals. -- J. Phys. C, 1982, v. 15, N 27, p. L953L956. [185] .., .. Pb0.97 Ge0.03 Te. -- .: . ., 1983, . 4748. [186] .., .., .., .. - Pb1-x Snx Te. -- , 1990, . 32, . 1, . 273275. [187] .., .., .., .. Pb1-x Gex Te . -- .: . ., 1983, . 3033. [188] Nikolic P.M. Solid solution of lead-germanium chalcogenide alloys and some of their optical properties. -- J. Phys. D, 1969, v. 2, N 3, p. 383 388. [189] .., .. GeTePbSeGeSePbTe. -- . . . ., 1968, . 4, . 11, . 18851889. [190] .. . -- . . . . .-. . ., 1989.

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. , . . . 1. .., .. Pb1-x Gex Te. -- , 1983, . 25, . 12, . 35713576. 2. .., .., .. Pb1-x Gex Te . -- . VI . . . . . , 1983, . 217218. 3. .., .. Pb1-x Gex Te . -- , 1984, . 18, . 4, . 624627. 4. .., .. Pb1-x Gex Te. -- , 1984, . 39, . 6, . 272274. 5. .., .., .., .., .. PbTe 1-x Sx . -- , 1984, . 40, . 6, . 229231. 6. .., .., .., .. - Pb1-x Gex Te. -- . . 6. , 1985, . 2(201), . 5861. 7. .., .. Pb1-x-y Gex Sny Te, . -- , 1985, . 19, . 10, . 17251730. 8. .., .., .. Pb1-x-y Gex Sny Te(In). -- . . . . . . , , 1985, . 30. 9. .., .., .., .., .. - Pb1-y (Te1-x Sx )y . -- . . . . . . , , 1985, . 59. 10. Lebedev A.I., Abdullin Kh.A. Impurity photoconductivity and electrical properties of Pb1-x-y Gex Sny Te doped with indium. -- Phys. Stat. Sol. (a), 1985, v. 91, N 1, p. 225234. 11. .., .., .. PbTe 1-x Sx . -- , 1986, . 28, . 4, . 10201025. 12. .., .. . -- , 1986, . 20, . 8, . 14231427. 13. .., .., .. Pb1-x Gex Se. -- , 1986, . 28, . 12, . 36103615.

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14. .., .., .. Pb1-x Gex Se. -- . . XI . . . (, 1987), . 2, . 83. 15. .., .. Pb1-x Gex Te1-y Sy (Ge, S). -- . . XI . . . (, 1987), . 2, . 20. 16. .., .. Pb1-x Gex Te1-y Sy , (Ge, S). -- . , . ., 1987, . 51, . 10, . 16831687. 17. .., .. A 4 B6 . -- , 1987, . 46, . 11, . 425427. 18. .., .. A4 B6 . -- , 1988, . 30, . 2, . 531535. 19. .., .. PbGeTeSe, PbSeGeTe. -- . ., ., 1988, . 29, . 6, . 100103. 20. .., .., .. . -- . . XI . . . . (, 1988), . 2, . 3031. 21. Vavilov V.S., Lebedev A.I., Sluchinskaya I.A. The electrical and optical properties of semiconducting dipolar glasses. -- Proc. 19th Int. Conf. Phys. Semicond. (Warszawa, 1988), p. 16891692. 22. .. 5 C3v . -- . ., ., 1989, . 30, . 6, . 6871. 23. .., .., .. Pb1-x Snx Te1-y Sey . -- . ., ., 1989, . 30, . 5, . 8385. 24. .., .. Pb1-x Snx Te1-y Sey . -- . . XII . . . (--, 1989), . 1, . 48. 25. .., .. Pb1-x Snx Te1-y Sey . -- , 1990, . 32, . 6, . 17801784. 26. .., .. Pb1-x Snx Te1-y Sey Pb1-x Snx Te1-y Sy . -- , 1992, . 34, . 5, . 14911495. 27. .., .. Pb1-x Snx Te1-y Sy . -- . . XIII . . (, 1992), . 2, . 83. 28. .., .., .. PbTe1-x Sx . -- , 1993, . 35, . 1, . 169172. 29. .., .. PbTe1-x Sx Pb1-x Gex Te. -- , 46

1993, . 35, . 3, . 629635. 30. Lebedev A.I., Sluchinskaya I.A. Unusual phase transitions in Pb1-x Snx Te1-y Sey and Pb1-x Snx Te1-y Sy crystals induced by Sn off-center ions. -- Ferroelectrics, 1993, v. 143, p. 9198. 31. Lebedev A.I., Sluchinskaya I.A. Ferroelectric phase transitions in IV-VI semiconductors associated with off-center ions. -- 8th Int. Meeting on Ferroelectricity (Gaithersburg, USA, 1993), Abstract P3-190. Abstracts book, p. 332. 32. Lebedev A.I., Sluchinskaya I.A. Glass-like behavior of electrical properties of quaternary solid solutions of IV-VI semiconductors with off-center ions near Curie temperature. -- MRS Fall 1993 Meeting (Boston, USA, 1993), Abstract P8-15. Abstracts book, p. 123. 33. Lebedev A.I., Sluchinskaya I.A. Low-temperature phase transitions in some quaternary solid solutions of IV-VI semiconductors. -- J. Alloys and Compounds, 1994, v. 203, N 12, p. 5154. , , , : http://scon155.phys.msu.su/rus/impur_r.html

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