Magnetoresistance of granular ferromagnets

被引：96

作者：

Gerber, A ^{[1
]}

Milner, A ^{[1
]}

Groisman, B ^{[1
]}

Karpovsky, M ^{[1
]}

Gladkikh, A ^{[1
]}

Sulpice, A ^{[1
]}

机构：

[1] CNRS,CTR RECH TRES BASSES TEMP,F-38042 GRENOBLE 09,FRANCE

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.55.6446

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a comparative study of the magnetic and magnetoresistance phenomena in two types of granular ferromagnets: ferromagnet-normal-metal mixtures Ni-Ag, Co-Ag, and ferromagnet-insulator mixtures Ni-SiO2, Co-SiO2. Anisotropic magnetoresistance and giant magnetoresistance (GMR) are identified in both types of systems above and below the magnetic component percolation threshold respectively. The GMR effect in granular ferromagnets is shown to be essentially independent of the nature and resistance of the nonmagnetic intergranular matrix.

引用

页码：6446 / 6452

页数：7

共 20 条

[1]

ABELES B, 1975, ADV PHYS, V24, P407, DOI 10.1080/00018737500101431

[2] GIANT MAGNETORESISTANCE OF (001)FE/(001) CR MAGNETIC SUPERLATTICES [J].

BAIBICH, MN ;

BROTO, JM ;

FERT, A ;

VANDAU, FN ;

PETROFF, F ;

EITENNE, P ;

CREUZET, G ;

FRIEDERICH, A ;

CHAZELAS, J .

PHYSICAL REVIEW LETTERS, 1988, 61 (21) :2472-2475

[3] GIANT MAGNETORESISTANCE IN HETEROGENEOUS CU-CO ALLOYS [J].

BERKOWITZ, AE ;

MITCHELL, JR ;

CAREY, MJ ;

YOUNG, AP ;

ZHANG, S ;

SPADA, FE ;

PARKER, FT ;

HUTTEN, A ;

THOMAS, G .

PHYSICAL REVIEW LETTERS, 1992, 68 (25) :3745-3748

[4] ENHANCED MAGNETORESISTANCE IN LAYERED MAGNETIC-STRUCTURES WITH ANTIFERROMAGNETIC INTERLAYER EXCHANGE [J].

BINASCH, G ;

GRUNBERG, P ;

SAURENBACH, F ;

ZINN, W .

PHYSICAL REVIEW B, 1989, 39 (07) :4828-4830

[5]

CHIEN CL, 1995, ANNU REV MATER SCI, V25, P129

[6] GIANT NEGATIVE MAGNETORESISTANCE IN GRANULAR FERROMAGNETIC SYSTEMS [J].

CHIEN, CL ;

XIAO, JQ ;

JIANG, JS .

JOURNAL OF APPLIED PHYSICS, 1993, 73 (10) :5309-5314

[7] ANTIGRANULOCYTES MAGNETIC SOLIDS [J].

CHIEN, CL .

JOURNAL OF APPLIED PHYSICS, 1991, 69 (08) :5267-5272

[8] TUNNEL-TYPE GMR IN METAL-NONMETAL GRANULAR ALLOY THIN-FILMS [J].

FUJIMORI, H ;

MITANI, S ;

OHNUMA, S .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 1995, 31 (1-2) :219-223

[9] SUPERPARAMAGNETISM AND RELAXATION EFFECTS IN GRANULAR NI-SIO2 AND NI-AL2O3 FILMS [J].

GITTLEMA.JI ;

ABELES, B ;

BOZOWSKI, S .

PHYSICAL REVIEW B, 1974, 9 (09) :3891-3897

[10] MAGNETIC PROPERTIES OF GRANULAR NICKEL FILMS [J].

GITTLEMAN, JI ;

GOLDSTEIN, Y ;

BOZOWSKI, S .

PHYSICAL REVIEW B-SOLID STATE, 1972, 5 (09) :3609-+

← 1 2 →