The Temperature Dependence of the Zero Field Splitting of Eu^<++> in Fluorine Cubic Crystals

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概要

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• The orbit-lattice interaction has been used to explain temperature-dependent crstal-field parameter b_4 of Eu^<++> in CaF_2 and SrF_2. By admixing the excited 4f^6ns configuration, this theory is successful in explaining the temperature depence of b_4, but the theoretical estimate in the magnitude dependence is about a factor 10^3 smaller than the observed value. The covalency is believed to be the main source of this discrepancy. It is also shown that in the point-charge approximation, the effect due to thermal expansion is too small to account for the measured temperature-dependent part of b_4

• 社団法人日本物理学会の論文
• 1972-02-05

著者

• Huang Chao-yuan

  Department Of Physics Case Western Reserve University

• Lue Juh-tzeng

  Department Of Physics Duke University:national Tsing Hua University

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