Nonlinear dynamic effects in micron-sized Permalloy lines and their influence on HF filter applications

Author

Korn, T. ; Kerekes, M. ; Stanescu, D. ; Xavier, P. ; Ebels, U.

Author_Institution

CNRS, Grenoble, France

fYear

2005

fDate

4-8 April 2005

Firstpage

2069

Lastpage

2070

Abstract

A combined time- and frequency-domain study on the dynamic properties of Permalloy (Py) lines with different shape anisotropies on top of coplanar waveguides (CPWs) is presented. Results are compared to numerical simulations of the magnetization dynamics using a macrospin model. The resonance frequency of microstructured ferromagnetic Py lines is observed to depend on the pumping field amplitude. This nonlinear effect has to be taken into account if these devices are to be used as high-frequency filters.

Keywords

Permalloy; coplanar waveguides; crystal microstructure; ferromagnetic materials; magnetisation; waveguide filters; HF filter; NiFe; coplanar waveguides; high-frequency filters; macrospin model; magnetization dynamics; micron-sized Permalloy lines; microstructured ferromagnetic Py lines; nonlinear dynamic effects; pumping field amplitude; resonance frequency; shape anisotropies; Anisotropic magnetoresistance; Coplanar waveguides; Filters; Hafnium; Magnetic resonance; Magnetic separation; Magnetization; Numerical simulation; Resonant frequency; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International

Print_ISBN

0-7803-9009-1

Type

conf

DOI

10.1109/INTMAG.2005.1464473

Filename

1464473