Low-temperature transport properties of polycrystalline Ba_8Ga_16Sn_30
Low-temperature transport properties of polycrystalline Ba_8Ga_16Sn_30
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DOI：
10.1557/jmr.2004.0467
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发表时间：
2004-12
影响因子：
2.7
通讯作者：
G. Nolas;Joshua Cohn;J. Dyck;C. Uher;G. Lamberton;T. Tritt
中科院分区：
文献类型：
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作者：
G. Nolas;Joshua Cohn;J. Dyck;C. Uher;G. Lamberton;T. Tritt
对Ba_8Ga_16Sn_30进行了低温电阻率、Seebeck系数、热导率和热容测量。该化合物以立方VIII型笼形物相结晶，空间群为I\overline{4}3$$ I 4 <$3 m，Ba原子位于由Ga和Sn原子的四面体键合网络形成的空隙内。Ba_8Ga_（16）Sn_（30）在150 K以上表现出半导体特性，具有较低的热导率，因此具有热电应用的潜力。
Low-temperature resistivity, Seebeck coefficient, thermal conductivity, and heat-capacity measurements were performed on Ba_8Ga_16Sn_30. This compound crystallizes in a cubic type-VIII clathrate phase, space group $$I\overline{4}3$$ I 4 ¯ 3 m , with the Ba atoms residing inside voids created by a tetrahedrally bonded network of Ga and Sn atoms. Ba_8Ga_16Sn_30 exhibits semiconducting behavior above 150 K with a low thermal conductivity and thus may hold potential for thermoelectric applications.