Temperature dependence of giant magneto-resistance in PtMn- and Fe2O3-based specular spin valves

被引：6

作者：

Kato, T

Miyashita, K

Iwata, S

Tsunashima, S

Sakakima, H

Sugita, Y

Kawawake, Y

机构：

[1] Nagoya Univ, Dept Elect, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[2] Matsushita Elect Ind Co Ltd, Adv Technol Res Labs, Soura Ku, Kyoto 6190237, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2002年 / 240卷 / 1-3期

关键词：

magneto-resistance; -; giant; spin valve; electric resistivity - temperature dependent; specular scattering;

D O I：

10.1016/S0304-8853(01)00745-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Temperature dependence of the giant magneto-resistance (MR) was measured for spin valves with and without nanooxide layer (NOL). In spin valves with NOL, the MR ratio increased more remarkably on lowering the temperature than in those without NOL. The temperature dependence of MR ratio and that of the resistivity were explained. by using two-current model. The MR ratio enhanced with NOL is attributed to the increase of the mean free path of upspin electrons. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：168 / 170

页数：3

共 6 条

[1] ENGELHOF WF, 1996, J APPL PHYS, V79, P5277
[2] 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
[3] KAMIGUCHI K, DIGEST INTERMAG 99
[4] Large MR ratios in spin valves bounded with insulating antiferromagnets
Sakakima, H
Sugita, Y
Satomi, M
Kawawake, Y
[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 198-99 : 9 - 11
[5] Sakakima H, 2000, J MAGN MAGN MATER, V210, pL20
[6] 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 →