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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 17    Special 1    November 2007

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Modifying factor for determining broadband complex permeability of
magnetic thin films
DU Gang(杜  刚), JIANG Jian-jun(江建军), YUAN Lin(袁  林), BIE Shao-wei(别少伟), MA Qiang(马  强),
TIAN Bin(田  斌), ZHANG Xiu-cheng(张秀成), HE Hua-hui(何华辉)

Department of Electronic Science and Technology, Huazhong University of Science and Technology,
Wuhan 430074, China

Abstract:A new method of the modifying factor for determining the broadband complex permeability of magnetic thin films, was proposed. Based on the measurement technology of shot-end microstrip line and the new modify factor, a series of FeCo-based magnetic thin films deposited on the oxidized silicon substrates and with an in-plane uniaxial anisotropy were measured in the frequency range of 0.5−5 GHz. The results fit well with the Landau-Lifchitz-Gilbert theory in a broad frequency range.

 

Key words: magnetic thin films; microwave measurement; complex permeability; microstrip line; high frequency structure simulation

ISSN 1672-7029
CN 43-1423/U

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