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Low-Temperature Physical and Thermoelectric Properties of Ba8Ni5Ge41

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Abstract

Resistivity, Hall resistivity, thermopower, thermal conductivity, and magnetization are reported for polycrystalline Ba8Ni5Ge41. Ba8Ni5Ge41 is diamagnetic with susceptibility χ dia = (−2.4 to −2.82) × 10−7 emu/g. Semiconductor-like behavior was observed for the resistivity. The thermopower shows positive values for a wide temperature range. The Hall resistivity indicates the dominance of electrons, suggesting the existence of multiband conductance. At room temperature, the thermal conductivity is 1.78(5) W/K m. The highest ZT of Ba8Ni5Ge41 is 0.0016 at about 278 K.

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Authors and Affiliations

  1. WPI-AIMR, Tohoku University, Katahira 2-1-1 Aoba, Sendai, 980-0812, Japan

    Jingtao Xu, Yoichi Tanabe & Katsumi Tanigaki

  2. Department of Physics, Graduate School of Science, Tohoku University, 6-3 Aoba Aramaki Aoba-ku, Sendai, 980-8578, Japan

    Jiazhen Wu, Satoshi Heguri, Gang Mu, Hidekazu Shimotani & Katsumi Tanigaki

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  1. Jingtao Xu
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  2. Jiazhen Wu
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  3. Yoichi Tanabe
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  4. Satoshi Heguri
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  5. Gang Mu
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  6. Hidekazu Shimotani
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  7. Katsumi Tanigaki
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Correspondence to Jingtao Xu.

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Xu, J., Wu, J., Tanabe, Y. et al. Low-Temperature Physical and Thermoelectric Properties of Ba8Ni5Ge41 . J. Electron. Mater. 42, 2025–2029 (2013). https://doi.org/10.1007/s11664-013-2509-z

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  • DOI: https://doi.org/10.1007/s11664-013-2509-z

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