The structure, chemistry and magnetic properties of FePbBiO 4
The structure, chemistry and magnetic properties of FePbBiO 4
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FePbBiO 4 的结构、化学及磁性能
DOI：
10.1039/c6tc01034b
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发表时间：
2016
影响因子：
6.4
通讯作者：
De Laune B
中科院分区：
文献类型：
--
作者：
De Laune B
已合成化合物FePbBiO4，具有与FeSb2O4密切相关的四方结构（P42/mbc，a = 8.48924(9) Å，c = 6.10597(8) Å）。它提供了具有这种结构的化合物的第一个例子，其中（a）在边缘连接的八面体链内仅包含三价离子（此处为Fe3+），并且（b）在八面体链之间形成的通道壁中容纳Bi3+。 FePbBiO4 具有反铁磁性有序性，尼尔温度为 24 K；中子衍射揭示了 A 型磁序，其矩垂直于 [001]。 Fe3+ 在 4 K 时的磁矩为 3.74(6) μB，略低于在有序磁性氧化物中通常观察到的该阳离子的磁矩。
The compound FePbBiO4 has been synthesised and has a tetragonal structure (P42/mbc, a = 8.48924(9) Å, c = 6.10597(8) Å) that is closely related to FeSb2O4. It provides the first example of a compound with this structure that (a) contains only trivalent ions (here Fe3+) within the chains of edge-linked octahedra and (b) accommodates Bi3+ in the walls of the channels formed between the chains of octahedra. FePbBiO4 orders antiferromagnetically with a Néel temperature of 24 K; neutron diffraction reveals A-type magnetic order with moments oriented perpendicular to [001]. The magnetic moment of Fe3+ at 4 K is 3.74(6) μB, slightly lower than that commonly observed for this cation in well-ordered magnetic oxides.