Giant magnetoresistance by exchange springs in DyFe2/YFe2 superlattices -: art. no. 186808

被引：63

作者：

Gordeev, SN ^{[1
]}

Beaujour, JML

Bowden, GJ

Rainford, BD

de Groot, PAJ

Ward, RCC

Wells, MR

Jansen, AGM

机构：

[1] Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England

[2] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England

[3] Max Planck Inst Festkorperforsch, Grenoble High Magnet Field Lab, F-38042 Grenoble 9, France

[4] CNRS, F-38042 Grenoble 9, France

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.87.186808

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Magnetization and magnetoresistance measurements are reported for antiferromagnetically coupled DyFe2/YFe2 multilayers in fields up to 23 T It is demonstrated that the formation of short exchange springs (similar to 20 Angstrom) in the magnetically soft YFe2 layers results in a giant magnetoresistance as high as 32% in the spring region. It is shown that both the magnitude of the effect and its dependence on magnetic field are in good agreement with the theory of Levy and Zhang for domain wall induced giant magnetoresistance.

引用

页码：186808 / 1

页数：4

共 15 条

[1] 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

[2]

Barthélémy A, 1999, HANDB MAG M, V12, P1, DOI 10.1016/S1567-2719(99)12005-5

[3] Discrete exchange-springs in magnetic multilayer samples [J].

Bowden, GJ ;

Beaujour, JML ;

Gordeev, S ;

de Groot, PAJ ;

Rainford, BD ;

Sawicki, M .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2000, 12 (44) :9335-9346

[4] Spin accumulation and domain wall magnetoresistance in 35 nm Co wires [J].

Ebels, U ;

Radulescu, A ;

Henry, Y ;

Piraux, L ;

Ounadjela, K .

PHYSICAL REVIEW LETTERS, 2000, 84 (05) :983-986

[5] Hard/soft magnetic heterostructures: model exchange-spring magnets [J].

Fullerton, EE ;

Jiang, JS ;

Bader, SD .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) :392-404

[6] Giant magnetoresistive effects in a single element magnetic thin film [J].

Gregg, JF ;

Allen, W ;

Ounadjela, K ;

Viret, M ;

Hehn, M ;

Thompson, SM ;

Coey, JMD .

PHYSICAL REVIEW LETTERS, 1996, 77 (08) :1580-1583

[7] Resistivity due to domain wall scattering [J].

Levy, PM ;

Zhang, SF .

PHYSICAL REVIEW LETTERS, 1997, 79 (25) :5110-5113

[8] Magnetoresistance of Bloch-wall-type magnetic structures induced in NiFe/CoSm exchange-spring bilayers [J].

Mibu, K ;

Nagahama, T ;

Shinjo, T ;

Ono, T .

PHYSICAL REVIEW B, 1998, 58 (10) :6442-6446

[9] OSCILLATORY INTERLAYER COUPLING AND GIANT MAGNETORESISTANCE IN CO/CU MULTILAYERS [J].

MOSCA, DH ;

PETROFF, F ;

FERT, A ;

SCHROEDER, PA ;

PRATT, WP ;

LALOEE, R .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1991, 94 (1-2) :L1-L5

[10] Magnetic anisotropy in (110) epitaxial DyFe2 Laves phase [J].

Oderno, V ;

Dufour, C ;

Dumesnil, K ;

Bauer, P ;

Mangin, P ;

Marchal, G .

PHYSICAL REVIEW B, 1996, 54 (24) :17375-17378

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