Hysteresis and control of ferromagnetic resonances in rings

被引：70

作者：

Giesen, F

Podbielski, J

Korn, T

Steiner, M

van Staa, A

Grundler, D

机构：

[1] Univ Hamburg, Inst Angew Phys, D-20355 Hamburg, Germany

[2] Univ Hamburg, Mikrostrukturforschungszentrum, D-20355 Hamburg, Germany

来源：

APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 11期

关键词：

D O I：

10.1063/1.1886247

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The spin dynamics in narrow ferromagnetic rings is studied in the frequency range from 45 MHz to 20 GHz at room temperature. Our broadband spectrometer allows us to monitor the ferromagnetic resonance of characteristic spin configurations as a function of an external field mu H-0. We observe hysteresis and irreversible jumps of the resonance frequencies which we attribute to onion-to-vortex and vortex-to-reversed-onion transitions. (C) 2005 American Institute of Physics.

引用

页码：1 / 3

页数：3

共 8 条

[1]

GIESEN F, IN PRESS J APPL PHYS

[2]

HILLEBRANDS B, 1998, TOPICS APPL PHYS

[3] THEORY OF DIPOLE-EXCHANGE SPIN-WAVE SPECTRUM FOR FERROMAGNETIC-FILMS WITH MIXED EXCHANGE BOUNDARY-CONDITIONS [J].