Large MR ratios in spin valves bounded with insulating antiferromagnets

被引：24

作者：

Sakakima, H ^{[1
]}

Sugita, Y ^{[1
]}

Satomi, M ^{[1
]}

Kawawake, Y ^{[1
]}

机构：

[1] Matsushita Ind Co Ltd, Cent Res Lab, Seika, Kyoto 6190237, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1999年 / 198-99卷

关键词：

GMR; specular scattering; spin valves; antiferromagnet;

D O I：

10.1016/S0304-8853(98)00591-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

MR properties of spin valves composed of AF/Co/Cu/Co(/Cu/Co/AF') layers were studied using insulating antiferromagnets, alpha-Fe(2)O(3), Nio as the bottom AF and top AF' layer. Spin valves using IrMn as the top AF' layer were also prepared for comparison. The MR ratios of alpha-Fe(2)O(3)/Co/Cu/Co/Cu/Co/AF' spin valves using Ir Mn and alpha-Fe(2)O(3) as the top AF' layers were about 21% and 28%, respectively. The experimental data are compared with numerical results using the Barnas' model. The large MR ratios in the spin valves bounded with insulating anti-ferromagnets such as alpha-Fe(2)O(3) may be attributed to the specular scattering effect at the interface of Co and alpha-Fe(2)O(3). (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：9 / 11

页数：3

共 8 条

[1] NOVEL MAGNETORESISTANCE EFFECT IN LAYERED MAGNETIC-STRUCTURES - THEORY AND EXPERIMENT
BARNAS, J
FUSS, A
CAMLEY, RE
GRUNBERG, P
ZINN, W
[J]. PHYSICAL REVIEW B, 1990, 42 (13): : 8110 - 8120
[2] Oxygen as a surfactant in the growth of giant magnetoresistance spin valves
Egelhoff, WF
Chen, PJ
Powell, CJ
Stiles, MD
McMichael, RD
Judy, JH
Takano, K
Berkowitz, AE
[J]. JOURNAL OF APPLIED PHYSICS, 1997, 82 (12) : 6142 - 6151
[3] Specular electron scattering in giant magnetoresistance spin valves
Egelhoff, WF
Chen, PJ
Powell, CJ
Stiles, MD
McMichael, RD
Judy, JH
Takano, K
Berkowitz, AE
Daughton, JM
[J]. IEEE TRANSACTIONS ON MAGNETICS, 1997, 33 (05) : 3580 - 3582
[4] Spin-valves with antiferromagnetic alpha-Fe2O3 layers
Hasegawa, N
Makino, A
Koike, F
Ikarashi, K
[J]. IEEE TRANSACTIONS ON MAGNETICS, 1996, 32 (05) : 4618 - 4620
[5] Enhancement of MR ratios with Ag capping layer in (100) oriented Ni-Fe/Cu/Co trilayers
Kawawake, Y
Sakakima, H
[J]. IEEE TRANSACTIONS ON MAGNETICS, 1997, 33 (05) : 3538 - 3540
[6] Enhanced GMR in [NiFe/Cu/Co] with specular reflective capping layers
Sakakima, H
Hirota, E
Kawawake, Y
[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 184 (01) : 49 - 54
[7] SUGITA Y, ISPMM 98
[8] Enhanced giant magnetoresistance in spin-valves sandwiched between insulating NiO
Swagten, HJM
Strijkers, GJ
Bloemen, PJH
Willekens, MMH
deJonge, WJM
[J]. PHYSICAL REVIEW B, 1996, 53 (14): : 9108 - 9114

← 1 →