Journal of Magnetics

  • 제16권3호
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  • Pages.197-200
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  • 2011
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  • 1226-1750(pISSN)
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  • 2233-6656(eISSN)
한국자기학회 (The Korean Magnetics Society)
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Magnetic Properties of Ordered L12 FePt3: A First Principles Study

  • Kim, Dong-Yoo (Department of Physics, Pukyong National University) ;
  • Hong, Ji-Sang (Department of Physics, Pukyong National University)
  • 투고 : 2011.07.11
  • 심사 : 2011.09.16
  • 발행 : 2011.09.30
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초록

Using the full potential linearized augmented plane wave (FLAPW) method, the influences of uniform and tetragonal strains on the magnetic state have been explored for chemically ordered bulk $L1_2$ $FePt_3$. The ordered state displays antiferromagnetic $Q_1$ (AFM-$Q_1$) state but it transitions into antiferromagnetic $Q_2$ (AFM-$Q_2$) state at about 10% uniform strain. The ferromagnetic (FM) state is observed at 11% uniform strain. For tetragonal strain, it is also seen that the transition from AFM-$Q_1$ to AFM-$Q_2$ depends on the strength and direction of the applied strain. The FM state does not appear in this case. Magnetocrystalline anisotropy (MCA) calculations for tetragonal distortion reveal that the spin reorientation transition occurs. In addition, we find that the direction of magnetization and the magnitude of magnetic anisotropy energy strongly depend on the c/a ratio.

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참고문헌

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피인용 문헌

  1. Size control of L12-FePt3 nanocrystals by spin-coating method vol.10, pp.3, 2016, https://doi.org/10.1007/s40094-016-0223-y