Proceedings of the Korean Magnestics Society Conference (한국자기학회:학술대회 개요집)

  • 2000.09a
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  • Pages.307-314
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  • 2000
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  • 2233-9485(pISSN)
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  • 2233-9574(eISSN)
The Korean Magnetics Society (한국자기학회)
권호 표지

Angular modulation of the GMR at the 2nd AFM

  • S. J. Kang (Dept. Institute of Physics and Applied Physics & Atomic-scale Surface Science Research Center, Yonsei Uni.) ;
  • Kim, K. Y. (Korea Institute of Science and Technology) ;
  • W. T. Ye (Dept. Institute of Physics and Applied Physics & Atomic-scale Surface Science Research Center, Yonsei Uni.) ;
  • Lee, J. (Dept. Institute of Physics and Applied Physics & Atomic-scale Surface Science Research Center, Yonsei Uni.)
  • Published : 2000.09.01
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Abstract

In order to study the effect of the magnetic anisotropy on the giant magnetoresistance (GMR), the angle dependent magnetoresistance (MR) was measured. The experimental results show that the maximum MR ratio depends on the angle between the direction of the applied field and that of the easy axis. The angular modulation of the MR ratio can be explained by the alignments of the two 'effective' magnetization vectors that are bound to their own easy axes. The typical property of MR loops at 2$\^$nd/ antiferromangtic maximum (AFM) such as two maxima was discussed in relation with the magnetic anisotropy (MA). The simulated results under an assumption of the two in-plane easy axes, which exist in the sample, were compared with the experiments.

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