Static and dynamic properties of patterned magnetic permalloy films

被引：24

作者：

Hillebrands, B

Mathieu, C

Hartmann, C

Bauer, M

Buttner, O

Riedling, S

Roos, B

Demokritov, SO

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] CNRS,MICROSTRUCT & MICROELECT LAB,F-92220 BAGNEUX,FRANCE

[3] UNIV SAARBRUCKEN,SAARBRUCKEN,GERMANY

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1997年 / 175卷 / 1-2期

关键词：

spin waves; anisotropy; magnetic dots;

D O I：

10.1016/S0304-8853(97)00150-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Static magnetic and spin-wave properties of square lattices of permalloy micron dots with thicknesses of 500 Angstrom and 1000 Angstrom and with varying dot separations have been investigated. The spin-wave frequencies can be well described taking into account the demagnetization factor of each single dot. 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.

引用

页码：10 / 15

页数：6

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