PHYSICAL PROPERTIES OF SMB6
PHYSICAL PROPERTIES OF SMB6
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DOI：
10.1103/physrevb.3.2030
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发表时间：
1971-01-01
期刊：
影响因子：
--
通讯作者：
HULL, GW
中科院分区：
文献类型：
--
作者：
NICKERSON, JC;WHITE, RM;HULL, GW
我们提出了一个 Sm B 6 电子结构模型，该模型是通过新的输运测量结合磁化率和晶格能量分析得出的。我们的模型成功描述了这种材料的电阻率、霍尔效应、磁化率和穆斯堡尔异构体位移。此外，它还预测低温比热容的异常。晶格能量学分析表明，硼晶格的刚性是导致 Sm 离子在 4 f 5 或 4 f 6 构型中的 4 f 壳层中出现相同位点的原因。基于该分析预测了稀土六硼化物的压缩性之间的关系。
We propose a model for the electronic structure of Sm B 6 suggested by new transport measurements in combination with analyses of the magnetic susceptibility and lattice energetics. Our model successfully describes the resistivity, Hall effect, magnetic susceptibility, and Mössbauer isomer shift in this material. In addition, it predicts an anomaly in the low-temperature specific heat. Analysis of the lattice energetics shows that the rigidity of the boron lattice is responsible for the fact that Sm ions on equivalent sites can occur with the 4 f shell in either the 4 f 5 or the 4 f 6 configuration. A relationship among the compressibilities of the rare-earth hexaborides is predicted on the basis of this analysis.