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Browse Journals & Magazines > Journal of Applied Physics ...> Volume:87 Issue:9 Help

Determination of magnetic properties of ultrathin iron films using microwave stripline technique

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3 Author(s)
Su, Jun ; Department of Electrical and Computer Engineering and Institute for Surface and Interface Science, University of California, Irvine, California 92697 ; Tsai, C.S. ; Lee, C.C.

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.372582 

Microwave microstrip line technique is utilized to determine the magnetic properties of ultrathin iron (Fe) films. Wideband tunable microwave filters are fabricated, either in integrated or flip-chip type, on ultrathin Fe films grown on GaAs substrates using molecular beam epitaxy. Taking advantage of the ferromagnetic resonance effects of the Fe films, four-fold variation of the resonance frequency is found to relate directly to the tetragonal symmetry of in-plane anisotropy. As a result, effective magnetization 4πMeff, four-fold in-plane anisotropy K1, second order term of perpendicular uniaxial anisotropy Ku⊥, and the Gilbert damping factor of the ultrathin films are derived from Landau–Lifshitz equation and transmission characteristics of the microwave filters involved. © 2000 American Institute of Physics.

Published in:
Journal of Applied Physics  (Volume:87 ,  Issue: 9 )

Date of Publication: May 2000

Page(s):
5968 - 5970
ISSN :
0021-8979
Digital Object Identifier :
10.1063/1.372582
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
May 2000

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