Magnetic interactions in Fe1-xMxSb2O4, M = Mg, Co, deduced from Mössbauer spectroscopy
Magnetic interactions in Fe1-xMxSb2O4, M = Mg, Co, deduced from Mössbauer spectroscopy
复制标题
Fe1-xMxSb2O4 中的磁相互作用，M = Mg、Co，由穆斯堡尔谱推导出
DOI：
10.1007/s10751-018-1501-7
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发表时间：
2018
影响因子：
--
通讯作者：
Berry F
中科院分区：
文献类型：
--
作者：
Berry F
用~(57)Fe穆斯堡尔谱研究了Fe_1-−_xMg_xSb_2O_4(x=0.25，0.50，0.75)和Fe0.25Co_(0.75)Sb_2O_4的镁、钴取代的FeSb_2O_4。从磁有序材料记录到的复数光谱被解释为主要的磁相互作用发生在FeSb2O4磁结构中金红石八面体的金红石相关链上的模型。在Fe1−xMgxSb2O4型材料中，反磁性的镁离子没有磁矩，表现为非磁性的块体，破坏了由镁离子分隔的含铁链的c轴链段中的磁相互作用。在Fe0.25Co0.75Sb2O4中，光谱由不同组态的相邻Fe2+和Co2+离子组成。
Magnesium- and cobalt- substituted FeSb2O4, of composition Fe1−xMgxSb2O4(x = 0.25, 0.50, 0.75) and Fe0.25Co0.75Sb2O4have been examined by57Fe Mössbauer spectroscopy. The complex spectra recorded from the magnetically ordered materials are interpreted in terms of models in which the dominant magnetic interactions occur along the rutile-related chains of FeO6octahedra in the magnetic structure of FeSb2O4. In materials of the type Fe1−xMgxSb2O4, the diamagnetic Mg2+ions have no magnetic moment and behave as non-magnetic blocks which disrupt the magnetic interactions in the chains along thec-axis forming segments of iron-containing chains separated by Mg2+ions. In Fe0.25Co0.75Sb2O4the spectra are composed of components from different configurations of neighbouring Fe2+and Co2+ions.