Double exchange in cubic crystals with pairs of exchange-coupled mixed-valence 3d3-3d4 ions |
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| Authors: | V. V. Bannikov V. Ya. Mitrofanov |
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| Affiliation: | (1) Institute of Metallurgy, Ural Division, Russian Academy of Sciences, Yekaterinburg, 620016, Russia |
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| Abstract: | Specifics of the exchange interaction in mixed-valence Cr2+–Cr3+ 3d-ion pairs in KZnF3 crystals are studied. It is shown that the double-exchange interaction can be significantly reduced by the low-symmetry crystal field created by a compensator. The features of the exchange interaction and optical absorption spectra are qualitatively analyzed. |
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