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Investigation of the structural, magnetic and magneto-optical properties of the thin-film systems based on cobalt and bismuth

, -

6 : ., ., « » 2015 . . . .C.

­ 2015


1. __________________________________________ 5 1.1. _________________________________________________ 5 1.2. _ 1.2.1. - _ 1.2.2. ______ 1.2.3. - ___ 1.2.4. ___ 1.2.5. _________ __ __ __ __ __ __ _____ _____ _____ _____ _____ _____ __ __ __ __ __ __ _____ _____ _____ _____ _____ _____ __ __ __ __ __ __ _____ _____ _____ _____ _____ _____ __ __ __ __ __ __ ___ ___ ___ ___ ___ ___

_________________________________________________ 3



2. ________________ 22

1.3. __ 1.3.1. ________________________________ 1.3.2. ______________________________________________________ 1.3.3. ______________________________________________ 1.3.4. ______________ 1.3.5. 5d ______________________________ 1.3.6. Fe ______________________________ 1.3.7. Bi _________________ 1.3.8. ______________________

_9 _9 _9 10 10 11

12 12 13

14 15 16 18 18 19

2.1. _____________________ 22 2.2. _______________________________________________ 23 2.3. __ 27 2.4. ______________________________ 28 2.5. _____________________ 29

3. ___________________ 31

3.1. ____________________ 31 3.2. _ 31 3.3. - ________________________________________________________ 38

_______________________________________________ 43
2




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uni

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12




, Co .

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Co . , [18]. ,

«» . [19]

. Co NiFe 5-20 r, Ta Cu Co, NiFe .

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[20]

Ni/Ge Ge/Ni/Ge/Ni/Ge. 150 10 . Ni 12.5 , 14 , 17.5

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.

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Si Fe.

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15
4


Fe ,

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, , . 1.3.5. 5d
CoFeB/MgO (PMA)

. Ta, - PMA . Ta. , Hf . [24] Mo, 5d ­ .



30%, ( 300-450° ) PMA 20%, , , (VSM).

.

16


.2 Ta Mo

Ta, 425 . , Mo . . , , Mo/CoFeB/MgO . Mo . , Mo . , , , Ta

, . 2, , Mo

17


1.3.6. Fe
. , , CoFe CoFe ,

2 . .

, . [25] CoFe , .

NiZn-. , 7 4.5 . , , . . , CoFe NiZn-

1.3.7. Bi
Bi, : Bi 3d­, . [26] , NiFe/Bi/NiFe Bi. 3 15 . Bi , , , , . Bi, 13 , ,
18


,

NiFe 10 , ,

3 . , 3 12


Bi . [27]. 18-20 .

Bi

CoFe/Bi/Co

1.3.8.
C42H [28] ,
28

, . , Ni. 15 0.11 /, 100-200 nm. Ni . 3 , «» .

(), Ni.

,



, ,



. 3 .

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, ( 700 )

19


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. (OLED). , , Alq3 (Alq3 - Al(C9H6NO)3), [29]. Alq3 , . , Alq3 . : 35 Co 150 Alq3, Co,

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35 Co 300 Alq3 100 Co 150 Alq3. , 100 Co , (AFM) Alq3/Co Alq3. , , Alq3, , 10 . .

20


. , ( 15o) (400 ) , 90 - 295 .

. . 15o. , Alq3/Co 90o . . 4 . . 15o , Co 35 /Alq3 150

. 4. Co 35 / Alq3 150 .

. 5. Co/Alq3 Co/Si .

. 5 , Co/Si Alq3/Co . , Alq3 Co.

, Co

21


2.
2.1. . . 1. , .

, - . . , .

,

2. , .



.



, . . , .



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P- S- (

22


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pen p en

[30], 0.5 ­ 6 .

=/4 ( - ).

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23




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1
IS

IN

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24

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; U
~

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, (­ ) .



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U-
~

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25


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26


, ( D1), - D1 ( D2).

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, -4. - . 7.

. 7 - -4

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1 2.

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27




. . 11 , 11, . 13. 14 6. . 10.

, , , . 0,5 4 3 .

, , , ,

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, (, ± 2%.



..). . , : , 1. ,

f = 50 .
28


, (f = 80 ).

,

, . . . . S- , S-. , 900 - S- S 1% P. .

- , . ,

­ 10-4, . 10%. 0,1 . 5 %. . , 3. .

2. .

2.5.
Bi . 4·10-7 , 3.8·10 , 250 , , 0.2 50 , Bi/Co 0.5 8 . .
29
-3

Co/Bi/Co Bi/Co

.

Hsub, . Co , tCo, 5 . Bi , tBi, Co/Bi/Co


, CuK . (). Co/Bi/Co Bi/Co -















( ) H. H H H
SUB

(). ( D2).
SUB

( D1), ­

- , > Hs, Hs ­ . .



-4 ( ) 0.5 4.5

30


3.
3.1.

, , . , XRD . - (). Bi . , Bi Bi/Co . Bi .

, Co/Bi/Co Bi/Co

«Nova», . , , Ra, 0.4 - 0.5 . Ra

3.2. Co/Bi/Co Bi/Co

. . . 8- 11 , Co/Bi/Co Bi/Co .

31


.8 , Co/Bi/Co .

.9 , Bi/Co

.10 , Co/Bi/Co .
32


. 11 , Bi/Co .

, D1 D2 , . . (), , () = 250 , . , , , . . [31], . . ,

,

NiFe Fe,

1.2 7%. ,

.
33


1937 .

. [32]. . , , D2 ,

. . , t , t
Bi

. , , D1 , , tBi.
Bi

, Co/Bi/Co -

(. 10). Bi/Co Bi (. . 11 12).

. , , , HS,

Co/Bi/Co , D1 .

. 12 Bi ,

34


Bi/Co , D1 .

. 13 Bi ,

, Hc, , Hs, . HC(tBi) HS(tBi) Bi/Co ,

, 12 13, ,

, . , Bi , t B i. [33],

, Bi

. [34] ,

. , t Bi HC HS Bi/Co .
Bi



Bi . . [33, 35, 36] , [37],
35

HC(tBi) HS(tBi) /Bi/Co




. , HC(tBi) Hs(tBi) Co/Bi/Co Bi ( () () ). tBi ( 0.2 50 ) HC HS Co/Bi/Co , , [33, 35, 36]. HC, 2, 1 15 tBi 0.5 50 . H = 0 .

.



Hs ,

,

. , HS(tBi) , JAF J /Bi/Co J
AF AF

, JAF, tBi. MS t ­ . - . 1.3·10-2 /2. , - HSMSt/4,

0 180, - Co/Bi/Co

. , J Bi .
36

.


.















- [38, 39], /F , F ­ . /
F

, , ( Quantum Well States, QWS's) . , 1- 1.2 .

0.3 ­ 0.4 .

[40, 41], . . , .

QWS's



, Co/Bi/Co H(tBi)

HS(tBi) t
Bi

. , .



37


3.3. - - Co/B/Co Bi/Co ,

.

0.5 4.0 , 13 14.



. 14 , Co/Bi/Co .

38


. 15 , Co/Bi .

.

, . 14 15, - .

- Co/Bi/Co , 0.4- 3.6 , , 5 . 1.5 , - Co/Bi/Co Co tBi = 10 . tBi > 3.6 0.5 , .

- Co/Bi/Co Bi/Co

, , tM, t (tinf). , t Co/Bi/Co t
Bi M inf

. [30] Fe Co 20-

24 0.5 ­ 4.0 . , = 0.4-3.6 , tinf.

39


10 . , tCo= 5 . t
Bi

( ) .

> 10

, - .

(Co) (Bi) . , Bi/Co . , -

- , tBi = 0.5 .

40


. 1. , , . 2. /Bi/Co Bi/Co

. . 3.

, D2 ,

, Co/Bi/Co
Bi

, D1 , , tBi: t t 4.
Bi

.

- . Bi/Co

,

/Bi/Co Bi/Co . 5.

(tBi) s(tBi)

Bi . 6. ). (

(tBi) s(tBi), /Bi/Co ,

, ( 0.4 50 ) .
7.

(tBi) s(tBi) /Bi/Co

Fe, Co/Ta, Mo, Zr, Pt, Pd/Fe, Co

.

41


8.

, 1.5 , 5 . 9. t
Bi

Co/Bi/Co t

Bi

= 0.4 - 3.6 ,

Co/Bi/Co Bi/Co

, - .

> 3.6 0.5 , .

(Co) (Bi) . ,

42


.
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, , XXII , «-2015», , ­ « 2015», - 07-12.2015 ., «Magnetism and Optical Research ( )», 29.11-02.12.2015 ., ; . : 1. .. , .. , .. // Co/Bi/Co // XXII , «-2015», . 267 ­ 269. 2. E.E. Shalygina, E.A. Gan'shina, Kharlamova A.M., Doronin D.S., Svalov A.V., Kurlyandskaya G.V. // The Influence of Bi on Magnetic and Magneto-Optical Properties of Co/Bi/Co Low-dimensional Thin-Film Structures // Book of abstarcts of International Symposium "Spin Waves 2015", Ioffe Physical-Technical Institute Saint Petersburg, Russia, , . 133. 3. E.E. Shalygina, A.M. Kharlamova , D.S. Doronin, G.V. Kurlyandskaya, A.V. Svalov // MAGNETO-OPTICAL INVESTIGATIONS OF LOW-DIMENSIONAL THIN-FILM CO/BI/CO SYSTEMS // MORIS 2015, Magnetics and Optics Research International Symposium, Toyohashi University of Technology ­ Universiti Sains Malaysia, , . 33-34.

46


.

., .. , .

., ..

, , , ,

47