Effect of Granule Shape on the Giant Magnetoresistance for Ferromagnetic Metal-Metal Granular Films

• Authors: C. Wang , P. Zhang , Y. Zhang , Y. Rong
• Languages of publication: EN

Abstracts

EN

In order to investigate the effect of granule shape on the giant magnetoresistance, assuming that granular films consist of ellipsoidal ferromagnetic granules embedded in a nonmagnetic metal matrix and the ellipsoidal granules have different demagnetizing factors in three directions, we combined two-current model with the effective medium theory to investigate the effect of granule shape on the giant magnetoresistance. The results revealed that the giant magnetoresistance in granular films depended strongly on the granule shape and was between those for current perpendicular to the plane of the layers and current in the plane of the layers in magnetic multilayers.

Keywords

EN

72.15.Gd; 75.47.-m; 75.50.-y

Discipline

• 75.47.-m: Magnetotransport phenomena; materials for magnetotransport(for spintronics, see 85.75.-d; see also 72.25.-b Spin polarized transport; 72.15.Gd Galvanomagnetic and other magnetotransport effects; for magnetotransport effects in thin films, see 73.50.Jt; see also 73.43.Qt Magnetoresistance)
• 75.50.-y: Studies of specific magnetic materials
• 72.15.Gd: Galvanomagnetic and other magnetotransport effects(see also 75.47.-m Magnetotransport phenomena; materials for magnetotransport)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 112
• Issue: 6
• Pages: 1231-1238

Dates

published

2007-12

received

2007-08-20

(unknown)

2007-10-11

Contributors

author

C. Wang

• Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, P.R. China
• Department of Physics, Liaocheng University, Liaocheng 252059, Shandong Province, P.R. China

author

P. Zhang

• Department of Physics, Liaocheng University, Liaocheng 252059, Shandong Province, P.R. China

author

Y. Zhang

• Department of Physics, Liaocheng University, Liaocheng 252059, Shandong Province, P.R. China

author

Y. Rong

• School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, P.R. China

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Identifiers

DOI

10.12693/APhysPolA.112.1231