Ferromagnetism Induced by Substitution of the Iron(IV) Ion by an Unusual High‐Valence Nickel(IV) Ion in Antiferromagnetic SrFeO3 |
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| Authors: | Hayato Seki Yoshiteru Hosaka Prof Dr Takashi Saito Dr Masaichiro Mizumaki Prof Dr Yuichi Shimakawa |
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| Institution: | 1. Institute for Chemical Research, Kyoto University, Uji, Kyoto, Japan;2. Japan Synchrotron Radiation Research Institute, SPring-8, Sayo-cho, Sayo-gun, Hyogo, Japan;3. Japan Science and Technology Agency, CREST (Japan), Uji, Kyoto, Japan |
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| Abstract: | Novel cubic perovskites SrFe1?xNixO3 (0≤x≤0.5) with unusual high‐valence iron(IV) and nickel(IV) ions were obtained by high‐pressure and high‐temperature synthesis. Substantial magnetic moments of NiIV, which is intrinsically nonmagnetic with a nominal d6 electron configuration, were induced by the large magnetic moments of FeIV through orbital hybridization with oxygen. As a result, ferromagnetism with the transition temperature (Tc) above room temperature could be induced. |
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| Keywords: | high-pressure chemistry iron magnetic properties nickel perovskite phases |
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