Interfacial roughness, correlation length, and giant magnetoresistances in NiFeCo/Cu superlattices

被引:6
作者
Diao, ZT [1 ]
Meguro, K [1 ]
Tsunashima, S [1 ]
Jimbo, M [1 ]
机构
[1] DAIDO INST TECHNOL,MAT ENGN LAB,NAGOYA,AICHI 457,JAPAN
来源
PHYSICAL REVIEW B | 1996年 / 53卷 / 13期
关键词
D O I
10.1103/PhysRevB.53.8227
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have shown by simulating the rocking curve data of x-ray diffraction using diffuse scattering theory that crystalline (Ill)-oriented NiFeCo/Cu superlattices sputtered on similar NiFeCo buffer layers on glass substrates display substantial correlated interfacial roughness as large as 4-6 Angstrom with moderately large lateral correlation lengths ranging from 180-300 Angstrom. A detailed study of the structures, electronic transport in the field, and magnetization characteristics of the superlattices demonstrated explicitly that under similar conditions of antiferromagnetic coupling giant magnetoresistance increases with increasing interfacial roughness, consistent with the theoretical expectation that giant magnetoresistance is enhanced by the presence of diffuse interface scattering. The experimental results suggest that interfacial roughness chiefly arises from interface disorder at the interfaces.
引用
收藏
页码:8227 / 8230
页数:4
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