MeV ion irradiation of Co/Cu multilayers

被引：32

作者：

Cai, M ^{[1
]}

Veres, T ^{[1
]}

Roorda, S ^{[1
]}

Cochrane, RW ^{[1
]}

Abdouche, R ^{[1
]}

Sutton, M ^{[1
]}

机构：

[1] MCGILL UNIV,DEPT PHYS,MONTREAL,PQ H3A 2T8,CANADA

来源：

JOURNAL OF APPLIED PHYSICS | 1997年 / 81卷 / 08期

关键词：

D O I：

10.1063/1.364465

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We examine the effect of MeV ion-beam irradiation on the giant magnetoresistance and related interlayer magnetic coupling in sputtered Co/Cu multilayers. At ion doses higher than 10(13)/cm(2), the resistivity of the multilayers increases noticeably, well beyond that measured for pure copper or cobalt films. This increase in resistivity of the multilayers is tentatively ascribed to ion-beam-induced interface disorder. With increasing dose, the magnetic interlayer coupling passes systematically from a mainly antiferromagnetic (AF) coupling to a ferromagnetic one and, in parallel, the giant magnetoresistance (GMR) is progressively destroyed. A linear relationship between the GMR and the volume fraction of AF coupled regions is observed up to an ion dose of 2 x 10(14)/cm(2). (C) 1997 American Institute of Physics.

引用

页码：5200 / 5202

页数：3