CHARACTERISTIC HIGH-FIELD DEPENDENCE OF MAGNETORESISTANCE IN FE/AG GRANULAR THIN-FILMS FABRICATED BY SPUTTERING AND ANNEALING

被引：12

作者：

MAKHLOUF, SA ^{[1
]}

SUMIYAMA, K ^{[1
]}

SUZUKI, K ^{[1
]}

机构：

[1] UNIV ASSIUT,FAC SCI,DEPT PHYS,ASSIUT,EGYPT

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1994年 / 33卷 / 9A期

关键词：

IRON-SILVER ALLOY; GRANULAR FILMS; MAGNETORESISTANCE; MAGNETIZATION; ELECTRICAL RESISTIVITY; X-RAY DIFFRACTION;

D O I：

10.1143/JJAP.33.4913

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetoresistance (MR) have been measured at 4.2 K in magnetic fields up to 140 kOe for Fe/Ag granular films produced by sputtering and heat treatment. In a Ag-rich specimen, the MR ratio is larger than 25% even in the as-deposited state, whereas it is suppressed with increasing Fe content. The MR ratio becomes about 55% in the 14 at. % Fe specimen annealed at 573 K for 10 min. Based upon the giant MR (GMR) models of granular materials, these results indicate the importance of Fe particle size and Fe/Ag interface roughness in achieving GMR.

引用

页码：4913 / 4918

页数：6

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