Structural and transport properties of Ba8Ga16SixGe30−x clathrates
作者： J. Martin , S. Erickson , G. S. Nolas , P. Alboni , T. M. Tritt
DOI: 10.1063/1.2171775
关键词:
摘要: We report on the structural, chemical, electrical resistivity, Seebeck coefficient, thermal conductivity, and Hall measurements of polycrystalline Si–Ge type-I clathrates with nominal composition Ba8Ga16SixGe30−x such that a constant Ga-to-group-IV element ratio is maintained while varying Si-to-Ge ratio. Electrical transport n-type specimens show modest increase in absolute coefficient decrease resistivity increasing Si content. This may imply modification band structure substitution reveals possible approach for optimizing these materials thermoelectric applications. These data are compared those Ba8Ga16Ge30 Sr8Ga16SixGe30−x.
scitation.org
harvard.edu
aip.org
sci-hub.se 参考文章(14)
A. Bentien, V. Pacheco, S. Paschen, Yu. Grin, F. Steglich, Transport properties of composition tuned α- and β-Eu8Ga16-xGe30+x Physical Review B. ,vol. 71, pp. 165206-1- 165206-12 ,(2005) , 10.1103/PHYSREVB.71.165206
Nick P. Blake, Lone Mo/llnitz, Georg Kresse, Horia Metiu, Why clathrates are good thermoelectrics: A theoretical study of Sr8Ga16Ge30 Journal of Chemical Physics. ,vol. 111, pp. 3133- 3144 ,(1999) , 10.1063/1.479615
V. L. Kuznetsov, L. A. Kuznetsova, A. E. Kaliazin, D. M. Rowe, Preparation and thermoelectric properties of A8IIB16IIIB30IV clathrate compounds Journal of Applied Physics. ,vol. 87, pp. 7871- 7875 ,(2000) , 10.1063/1.373469
George S. Nolas, Glen A. Slack, Sandra B. Schujman, Chapter 6 Semiconductor clathrates: A phonon glass electron crystal material with potential for thermoelectric applications Semiconductors and Semimetals. ,vol. 69, pp. 255- 300 ,(2001) , 10.1016/S0080-8784(01)80152-6
G.S. Nolas, H.J. Goldsmid, J Sharp, Thermoelectrics: Basic Principles and New Materials Developments ,(2001)
Nick P. Blake, Susan Latturner, J. Daniel Bryan, Galen D. Stucky, Horia Metiu, Band structures and thermoelectric properties of the clathrates Ba8Ga16Ge30,Sr8Ga16Ge30,Ba8Ga16Si30, and Ba8In16Sn30 Journal of Chemical Physics. ,vol. 115, pp. 8060- 8073 ,(2001) , 10.1063/1.1397324
B. C. Sales, B. C. Chakoumakos, R. Jin, J. R. Thompson, D. Mandrus, Structural, magnetic, thermal, and transport properties of X{sub 8}Ga{sub 16}Ge{sub 30} (X=Eu,Sr,Ba) single crystals Physical Review B. ,vol. 63, pp. 245113- ,(2001) , 10.1103/PHYSREVB.63.245113
J. Daniel Bryan, Nick P. Blake, Horia Metiu, Galen D. Stucky, Bo B. Iversen, Rasmus D. Poulsen, Anders Bentien, Nonstoichiometry and chemical purity effects in thermoelectric Ba8Ga16Ge30 clathrate Journal of Applied Physics. ,vol. 92, pp. 7281- 7290 ,(2002) , 10.1063/1.1519334
G. S. Nolas, J. L. Cohn, G. A. Slack, S. B. Schujman, Semiconducting Ge clathrates: Promising candidates for thermoelectric applications Applied Physics Letters. ,vol. 73, pp. 178- 180 ,(1998) , 10.1063/1.121747
Susan Latturner, Xianhui Bu, Nick Blake, Horia Metiu, Galen Stucky, Gallium Antimonide-Doped Germanium Clathrate—A p-Type Thermoelectric Cage Structure Journal of Solid State Chemistry. ,vol. 151, pp. 61- 64 ,(2000) , 10.1006/JSSC.2000.8622