Structural and electronic transport properties of polycrystalline p-type CoSb3
Structural and electronic transport properties of polycrystalline p-type CoSb3
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DOI：
10.1063/1.367350
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发表时间：
1998-04
影响因子：
3.2
通讯作者：
H. Anno;K. Hatada;H. Shimizu;K. Matsubara;Y. Notohara;T. Sakakibara;H. Tashiro;K. Motoya
中科院分区：
文献类型：
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作者：
H. Anno;K. Hatada;H. Shimizu;K. Matsubara;Y. Notohara;T. Sakakibara;H. Tashiro;K. Motoya
研究了不同晶粒尺寸（约3 × 102 μ m和3×102 μm）的p型CoSb 3多晶的结构和电子输运性质。还测量了磁化率。样品进行了表征，通过X射线衍射，电子探针显微分析，光学显微镜观察。样品被发现是化学计量和均匀的。样品的霍尔载流子浓度约为1018 cm−3，与温度的关系很弱。霍尔迁移率的温度依赖性表明，主要的散射机制急剧变化，取决于晶粒尺寸：对于大晶粒尺寸的中性杂质散射和声学声子散射的组合，和小晶粒尺寸的电离杂质散射。磁化率被认为是基本上是抗磁性的晶粒大小无关，并随温度略有不同。磁化率的弱温度依赖性可以解释为考虑…
The structural and electronic transport properties of polycrystalline p-type CoSb3 with different grain sizes (about 3 and 3×102 μm) were investigated. The magnetic susceptibility was also measured. Samples were characterized by x-ray diffractometry, electron-probe microanalysis, and optical microscope observation. Samples were found to be stoichiometric and homogeneous. The Hall carrier concentration of the samples is of the order of 1018 cm−3 and weakly dependent on the temperature. The temperature dependence of the Hall mobility suggests that the predominant scattering mechanism drastically changes depending on grain size: for large grain size a combination of the neutral impurity scattering and the acoustic phonon scattering, and for small grain size the ionized impurity scattering. The magnetic susceptibility was found to be essentially diamagnetic independently of grain size, and to vary slightly with temperature. The weak temperature dependence of the susceptibility can be explained by taking into ...