MAGNETISM AND TRANSPORT-PROPERTIES OF EVAPORATED CO/AG MULTILAYERS

被引：23

作者：

ARAKI, S

机构：

[1] RandD Center, TDK Corporation, Ichikawa, Chiba 272

来源：

JOURNAL OF APPLIED PHYSICS | 1993年 / 73卷 / 08期

关键词：

D O I：

10.1063/1.352879

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the magnetic and transport properties of Co/Ag multilayers grown by electron-beam evaporation in an ultrahigh vacuum. The oscillation of the interlayer exchange energy is confirmed for a Co layer thickness of 6 angstrom with a period of 16 angstrom. It is shown that the Co spins are aligned antiferromagnetically for only several monolayers of Co. The magnetoresistance (MR) ratio is 20% at room temperature and 41 % at 77 K for [Co (6 angstrom) -Ag (25 angstrom) ] X 40. The electron mean free path estimated by the free electron model is shortened from the ferromagnetic state to antiferromagnetic one. We confirm that enhanced MR properties could be achieved by realizing a single crystal structure.

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页码：3910 / 3916

页数：7

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