TEMPERATURE DEPENDENCE OF SPIN WAVE RESONANCE IN AMORPHOUS FILMS

  • Kim, Y.Y. (Department of Physics, Korea University) ;
  • Baek, J.S. (Department of Physics, Korea University) ;
  • Lee, S.J. (Department of Physics, Korea University) ;
  • Lee, T.G. (Department of Physics, Korea University) ;
  • Lim, W.Y. (Department of Physics, Korea University) ;
  • Yu, S.C. (Department of Physics, Chungbuk National University) ;
  • Lee, S.H. (Department of Physics, Chongju University) ;
  • Jang, P.W. (Department of Physics, Chongju University)
  • Published : 1995.10.01

Abstract

The temperature dependence of spin wave mode separation in amorphous $Co_{89.5}Zr_{10.5}$ thin film has been investigated at temperatures between 100 K and 300 K. The magnetization and the spectroscopic splitting factor were obtained for the main resonance mode in parallel and perpendicular magnetic field. ${\Delta}H_{2-3}$, the difference between resonance field of mode 2 and the resonance field of mode 3, increases with decreasing temperature. The linewidth increases for all the modes with decreasing temperature. Especially in mode 3 it increases rapidly below 200 K. This phenomenon could be caused by the increase of exchange stiffness constant or the decrease of surface magnetic anisotropy constant with decreasing temperature.

Keywords

References

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