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Magnetization reversal process of ferromagnetic granular thin films probed by magnetization-induced second harmonic generation

Appl. Phys. Lett. 95, 172515 (2009); doi:10.1063/1.3257977

Published 30 October 2009

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Y. F. Chiang, Y. J. Hsu, T. M. Liu, H. W. Chu, J. G. Lin, C. H. Chen, and Y.-M. Chang
Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan
We propose to use magnetization-induced second harmonic generation (MSHG) technique to explore the magnetization reversal process of cobalt granular thin films. The three-dimensional magnetization reversal process can be visualized by analyzing the polarization dependent MSHG hysteresis curves. It is found that the magnetization reversal process involves not only the in-plane but also the out-plane magnetization rotation because of the uniaxial anisotropy of cobalt granular thin films. This study demonstrates that MSHG can be a versatile optical technique to investigate the magnetic property of not only ferromagnetic epitaxial thin films but also ferromagnetic granular thin films. ©2009 American Institute of Physics
History: Received 21 September 2009; accepted 11 October 2009; published 30 October 2009
Permalink: http://link.aip.org/link/?APPLAB/95/172515/1
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KEYWORDS and PACS

Keywords
PACS
  • 75.70.Ak
    Magnetic properties of monolayers and thin films
  • 75.60.Jk
    Magnetization reversal mechanisms
  • 75.30.Gw
    Magnetic anisotropy
  • 78.66.Bz
    Optical properties of metals and metallic alloys (thin films)
  • 42.65.Ky
    Optical frequency conversion; harmonic generation
  • 75.50.Cc
    Ferromagnetism of nonferrous metals and alloys
  • YEAR: 2009

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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