Magnetic interaction in ferrous antimonite, FeSb2O4, and some derivatives

Magnetic interaction in ferrous antimonite, FeSb2O4, and some derivatives
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锑亚铁、FeSb2O4 和一些衍生物中的磁相互作用

DOI:
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发表时间:
2012
期刊:
Journal of Physics: Condensed Matter
影响因子:
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通讯作者:
M. J. Whitaker
M. J. Whitaker
中科院分区:
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文献类型:
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作者:
R. D. Bayliss;F. Berry;B. D. de Laune;C. Greaves;Ö. Helgason;J. Marco;M. Thomas;L. Vergara;M. J. Whitaker

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亚锑矿 FeSb2O4(与 Pb3O4 具有同构结构)以及 FeSb1.5Pb0.5O4 和 Co0.5Fe0.5Sb1.5Pb0.5O4 成分的一些铅和钴掺杂变体已通过 57Fe 和 121Sb 穆斯堡尔光谱进行了检查。锑以 Sb3+ 形式存在。锑位点上 Pb2+ 的存在会导致 Fe2+ 部分氧化为 Fe3+。不存在 Verwey 型跃迁,其中电子在不同氧化态的铁之间共享。准一维磁性结构导致弱耦合 Fe2+ 离子可以以非磁性状态与磁有序状态下的 Fe3+ 离子共存。
Ferrous antimonite, FeSb2O4, which is isostructural with Pb3O4, and some lead- and cobalt-doped variants of composition FeSb1.5Pb0.5O4 and Co0.5Fe0.5Sb1.5Pb0.5O4 have been examined by 57Fe and 121Sb Mössbauer spectroscopy. Antimony is present as Sb3+. The presence of Pb2+ on the antimony site induces partial oxidation of Fe2+ to Fe3+. There is no Verwey-type transition in which electrons are shared between iron in different oxidation states. The quasi-one-dimensional magnetic structure gives rise to situations in which weakly coupled Fe2+ ions can coexist in a non-magnetic state alongside Fe3+ ions in a magnetically ordered state.