Nonlinear magnetoimpedance and parametric excitation of standing spin waves in a glass-covered microwire

被引：14

作者：

Kraus, L. ^{[1
]}

Vazquez, M. ^{[2
]}

Infante, G. ^{[2
]}

Badini-Confalonieri, G. ^{[2
]}

Torrejon, J. ^{[2
]}

机构：

[1] ASCR, Inst Phys, Prague 18221, Czech Republic

[2] CSIC, Inst Mat Sci, E-28049 Madrid, Spain

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 06期

关键词：

giant magnetoresistance; glass; spin waves; wires; SOFT-MAGNETIC WIRES; GIANT MAGNETOIMPEDANCE; AMORPHOUS WIRES; FERROMAGNETIC-RESONANCE; LIGHT-SCATTERING; INSTABILITY; DEPENDENCE; ANISOTROPY; FILMS;

D O I：

10.1063/1.3079659

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The giant magnetoimpedance of an 8.5 mu m glass-covered amorphous microwire was investigated in the frequency range of 10 MHz-3.5 GHz. It was found that when the exciting microwave current exceeds some threshold value, a periodic fine structure appears in the frequency dependence of the complex impedance. The appearance of this nonlinear phenomenon is interpreted to be a consequence of the parametric excitation of standing spin waves.

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页数：3

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