Enhancement of rotatable anisotropy in ferrite doped FeNi thin film with oblique sputtering

Author： Zhou Cai Jiang Changjun Zhao Zhong

E-ISSN： 1361-6463|48|26|265001-265007

ISSN： 0022-3727

Source： Journal of Physics D: Applied Physics, Vol.48, Iss.26, 2015-07, pp. : 265001-265007

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Abstract

Rotatable anisotropy of stripe domain (SD) was investigated in a ferrite doped FeNi thin film with different oblique angles. Rotation of SD under an in-plane magnetic field was observed by magnetic force microscopy, suggesting the existence of rotatable anisotropy. A rotatable anisotropy field H_rot was derived from the fitting curves of the in-plane resonance field versus the angle between the orientation of easy axis and applied field. As the oblique angle increases, an increase of H_rot from 305 Oe to 468 Oe was observed and the perpendicular anisotropy increased as well, indicating a correlation between rotatable anisotropy and perpendicular anisotropy.