Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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Theoretical Calculation of Zero Field Splitting of $Mn^{2+}$ Ion in $LiTaO_3$Crystal

  • Yeom, T.H (Department of Physics, Chongju University) ;
  • Lee, S.H (Department of Physics, Chongju University)
  • Published : 2001.09.01
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Abstract

The semi-empirical superposition model has been applied to calculate the zero field splitting parameters of $Mn^{2+}$ion in $LiTaO_3$ single crystal, assuming that $Mn^{2+}$ion occupies one of two possible sites: $Li^{l+} \;or\; Ta^{5+}$ site, respectively. The 2nd-order axial zero field splitting parameters are $958\times10^{-4}cm^{-1}\; at\; Li^{1+}$ site and $193\times 10^{-4}cm^{-1} \;at\; Ta^{5+}$ site for $Mn^{2+}$ions. The 4th-order zero field splitting parameters at $Li^{l+} \;and\; Ta^{5+}$ sites are also determined. These calculated zero field splitting parameters are very important to determine the substitutional sites of doped impurity ions in $LiTaO_3$ crystal.

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