Substitutional site of Co2+ ion in RbMgF3 crystal |
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| Authors: | Wen-Lin Feng Wei-Qing Yang Wen-Chen Zheng Bang-Xing Li |
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| Institution: | 1. Department of Applied Physics , Chongqing University of Technology , Chongqing, 400054, People's Republic of China;2. International Center for Materials Physics, Chinese Academy of Sciences , Shenyang, 110016, People's Republic of China wenlinfeng@126.com;4. Department of Optics and Electronics , Chengdu University of Information Technology , Chengdu, 610225, People's Republic of China;5. Department of Material Science , Sichuan University , Chengdu, 610064, People's Republic of China;6. International Center for Materials Physics, Chinese Academy of Sciences , Shenyang, 110016, People's Republic of China;7. Department of Material Science , Sichuan University , Chengdu, 610064, People's Republic of China |
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| Abstract: | The spin-Hamiltonian (SH) parameters (g factors g //, g ⊥ and hyperfine structure constants A //, A ⊥) for Co2+ ions at the trigonal Mg2+ (I) and Mg2+ (II) sites of RbMgF3 crystal are calculated from the second-order perturbation formulas based on the cluster approach for 3d7 ions in trigonal symmetry. From the calculations, it is found that the calculated SH parameters for Co2+ ion at the Mg2+ (I) site are in poor agreement with, but those for Co2+ at the Mg2+ (II) site are close to, the experimental values. Therefore, we suggest that Co2+ in RbMgF3 crystal substitutes for Mg2+ (II) ion. The results are discussed. |
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| Keywords: | electronic paramagnetic resonance substitutional site crystal-field theory Co2+ RbMgF3 |
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