Microwave Permeability of FeCoAlON Ferromagnetic Thin Films with Stripe Domain Structure

We report the observation of multiple permeability peaks for FeCoAlON thin ferromagnetic films with stripe domain structure, in the 100 MHz to 5 GHz range and the space between any two adjacent peaks is equal approximately. This behavior should be correlated with the sinusoidal distribution of the m...

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Bibliographic Details
Published inApplied physics express Vol. 5; no. 9; pp. 093003 - 093003-3
Main Authors Luo, Feilong, Zheng, Fu, Lou, Yuanfu, Wu, Dongping, Cao, Jiangwei, Wei, Fulin
Format Journal Article
LanguageEnglish
Published The Japan Society of Applied Physics 01.09.2012
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Summary:We report the observation of multiple permeability peaks for FeCoAlON thin ferromagnetic films with stripe domain structure, in the 100 MHz to 5 GHz range and the space between any two adjacent peaks is equal approximately. This behavior should be correlated with the sinusoidal distribution of the magnetic moments and their magnetic collective excitation in the stripe domain. The multiple peak resonance can be described in terms of the phonon theory.
Bibliography:(a) 2D-MFM image and (b) 3D-MFM image of the 550 nm FeCoAlON film. Magnetization curves measured with the stripe (a) parallel and (b) perpendicular to the measuring magnetic field in the film plane. Schematic illustration of the spin structure in stripe domains. Schematic illustration of the magnetic moment structure of the atoms in the $x$-axis. Permeability spectrum of the FeCoAlON thin film measured (a) along the perpendicular direction and (b) the parallel direction of the stripe in the film plane.
ISSN:1882-0778
1882-0786
DOI:10.1143/APEX.5.093003