Relation between Structural and Magnetic Properties of Compound MnAs1-xPx (0≦x≦0.275)
Relation between Structural and Magnetic Properties of Compound MnAs1-xPx (0≦x≦0.275)
复制标题
化合物MnAs1-xPx(0≤x≤0.275)的结构与磁性能的关系
DOI：
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
H. Ido
中科院分区：
文献类型：
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作者：
T. Suzuki;H. Ido
在约10 0~6 0 0K温度范围内，测定了化合物MnAs 1-xPx(0≦x≦0.275)的结晶学参数，发现除MnAs外，其他化合物晶体在低温端均为MnP型结构，在临界温度下转变为NiAs型结构。这些结构转变是第二类，并伴随着非常大的晶体体积膨胀(∼10%)。为了了解化合物的结构和磁性之间的关系，还测量了化合物的磁化率的温度变化。根据居里-魏斯定律对实验结果进行了简单的分析，揭示了锰原子的自旋值及其相互作用与晶胞体积(或晶格参数)的关系。
The crystallographic parameters of compounds MnAs 1- x P x (0≦ x ≦0.275) are determined as a function of temperature between about 100 and 600 K. It is found that these crystals except for MnAs take a MnP type structure in low temperature side and transform to a NiAs type at critical temperatures. These structural transitions are of second kind and accompanied with very large dilation (∼10%) of crystal volume. In order to see the relationship between the structural and magnetic properties, the temperature variation of magnetic susceptibilities of the compounds is also measured. Simple analysis of the experimental results, based on the Curie-Weiss law, reveals the way in which the spin value of Mn atoms and the exchange interaction between them depend on the crystal voluem (or lattice parameter).