Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Magnetic Properties of La-doped YIG Films Prepared by LPE(Liquid Phase Epitaxy)

LPE 성장법으로 성장시킨 La을 첨가한 YIG 막의 자성특성

  • 김동영 (한국전자통신연구원 세라믹RF부품팀) ;
  • 한진우 (한국전자통신연구원 세라믹RF부품팀) ;
  • 김명수 (한국전자통신연구원 세라믹RF부품팀) ;
  • 이상석 (한국전자통신연구원 세라믹RF부품팀)
  • Published : 2001.03.01
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Abstract

Single crystalline films of La doped YIG(yttrium iron garnet) were grown by the liquid phase epitaxy. The lattice constants of films obtained by DCD(double crystalline diffractometer) measurement increased with increasing La contents in films. In particular, lattice constants of films grown wiht Y/La=20 solution were nearly same as those of GGG (gadolinium gallium garnet) substrate. The saturation magnetization measured with VSM (vibrating sample magnetometer) was about 1750Gauss which is the same as that of pure YIG irrespective of La contents in films. FMR(ferromagnetic resonance) linewidth of La doped YIG was smaller than that of pure YIG. Since appropriate La doping decreases the lattice mismatch between film and substrate, the FMR linewidth was Y/La=20 in this experiment.

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References

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