Anisotropic magnetic coupling of permalloy micron dots forming a square lattice

被引:107
作者
Mathieu, C
Hartmann, C
Bauer, M
Buettner, O
Riedling, S
Roos, B
Demokritov, SO
Hillebrands, B
Bartenlian, B
Chappert, C
Decanini, D
Rousseaux, F
Cambril, E
Muller, A
Hoffmann, B
Hartmann, U
机构
[1] UNIV PARIS 11,INST ELECT FONDAMENTALE,F-91405 ORSAY,FRANCE
[2] UNIV SAARBRUCKEN,SAARBRUCKEN,GERMANY
关键词
D O I
10.1063/1.119051
中图分类号
O59 [应用物理学];
学科分类号
摘要
Static magnetic and spin wave properties of square lattices of permalloy micron dots with thicknesses of 500 and 1000 Angstrom and with varying dot separations have been investigated. A magnetic fourfold anisotropy was found for the lattice with dot diameters of 1 mu m and a dot separation of 0.1 mu m. The anisotropy is attributed to an anisotropic dipole-dipole interaction between magnetically unsaturated parts of the dots. The anisotropy strength (order of 10(5) erg/cm(3)) decreases with increasing in-plane applied magnetic field. (C) 1997 American Institute of Physics.
引用
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页码:2912 / 2914
页数:3
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