Structures of Fe3+-Vo defects in ABO3 perovskite-type crystals |
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| Authors: | W C Zheng S Y Wu |
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| Institution: | 1. Department of Material Science, Sichuan University, Chengdu, China
2. International Center for Materials Physics, Chinese Academy of Sciences, Shenyang, China
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| Abstract: | The displacements of Fe3+ ions and hence the structures of Fe3+-Vo defects in ABO3 oxide perovskites are studied by analyzing their electron paramagnetic resonance data from the high-order perturbation formula of zero-field splitting on the basis of the spin-orbit coupling mechanism. The results suggest that the Fe3+ ions in the Fe3+-Vo defect centers are displaced away from the oxygen vacancy Vo by about 0.035 nm. The reasonableness of the displacement is discussed. |
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