Structural behavior of the ferromagnetic spinels AlxMo2S4 and GaxMo2S4, containing tetrahedral clusters of molybdenum atoms
Structural behavior of the ferromagnetic spinels AlxMo2S4 and GaxMo2S4, containing tetrahedral clusters of molybdenum atoms
复制标题
含有钼原子四面体簇的铁磁尖晶石 AlxMo2S4 和 GaxMo2S4 的结构行为
DOI：
10.1016/0022-4596(75)90012-2
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发表时间：
1975
影响因子：
3.3
通讯作者：
D. Brasen
中科院分区：
文献类型：
--
作者：
J. Vandenberg;D. Brasen
用粉末衍射法测定了铁磁尖晶石AlxMo 2S 4和GaxMo 2S 4（x ≤ 0.5）的结构。Al和Ga原子在四面体位置上有序排列。空间群为F4 3 m; a= 9.726 <$（Al x Mo 2 S4）和9.739 <$（Ga x Mo 2 S4）。发现Mo原子向四面体位置空位移动，这是由较低的Al和Ga浓度产生的。这导致在四面体簇的Mo周围的空缺。根据尖晶石型化合物中钼晶格的结构行为解释了它们的半导体和磁性。
The structure of the ferromagnetic spinels Al x Mo 2 S 4 and Ga x Mo 2 S 4 (x∼ 0.5) was determined from powder diffraction data. The Al and Ga atoms order on the tetrahedral sites. The space group is F 4 3m; a= 9.726 Å for Al x Mo 2 S 4 and 9.739 Å for Ga x Mo 2 S 4. The Mo atoms were found to shift towards the tetrahedral site vacancies, created by the lower Al and Ga concentrations. This results in tetrahedral clusters of Mo around the vacancies. Their semiconducting and magnetic behavior was explained on the basis of the structural behavior of the molybdenum lattice in these spinel compounds.