INTERPLAY BETWEEN OSCILLATORY EXCHANGE COUPLING AND COERCIVITIES IN GIANT MAGNETORESISTIVE [NI80FE20/CU/CO/CU]MULTILAYERS

被引：20

作者：

VALET, T ^{[1
]}

JACQUET, JC ^{[1
]}

GALTIER, P ^{[1
]}

COUTELLIER, JM ^{[1
]}

PEREIRA, LG ^{[1
]}

MOREL, R ^{[1
]}

LOTTIS, D ^{[1
]}

FERT, A ^{[1
]}

机构：

[1] UNIV PARIS 11, PHYS SOLIDES LAB, F-91405 ORSAY, FRANCE

来源：

APPLIED PHYSICS LETTERS | 1992年 / 61卷 / 26期

关键词：

D O I：

10.1063/1.107954

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have observed giant magnetoresistance in [Ni80Fe20/Cu/Co/Cu] multilayers with well-defined oscillations in magnitude as a function of the Cu layer thickness both at 300 and 4.2 K. The phase and period are found to be very similar to those previously measured in Co/Cu and, more recently, Ni81Fe19/Cu multilayers, However, the existence of a strong contrast in coercive fields between Ni80Fe20 and Co leads to a significant magnetoresistance for Cu layer thicknesses where coupling is zero or even moderately ferromagnetic. At room temperature, resistance changes as large as 7% are observed within a few tens of oersted of zero field.

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页码：3187 / 3189

页数：3

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