Low-temperature physical and thermoelectric properties of Ba 8Ni5Ge41

Jingtao Xu; Jiazhen Wu; Yoichi Tanabe; Satoshi Heguri; Gang Mu; Hidekazu Shimotani; Katsumi Tanigaki

doi:10.1007/s11664-013-2509-z

Low-temperature physical and thermoelectric properties of Ba ₈Ni₅Ge₄₁

Jingtao Xu, Jiazhen Wu, Yoichi Tanabe, Satoshi Heguri, Gang Mu, Hidekazu Shimotani, Katsumi Tanigaki

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Resistivity, Hall resistivity, thermopower, thermal conductivity and magnetization are reported for polycrystalline Ba₈Ni ₅Ge₄₁. 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 Ba₈Ni ₅Ge₄₁ is 0.0016 at about 278 K.

Original language	English
Pages (from-to)	2025-2029
Number of pages	5
Journal	Journal of Electronic Materials
Volume	42
Issue number	7
DOIs	https://doi.org/10.1007/s11664-013-2509-z
Publication status	Published - 2013 Jul

Keywords

Clathrates
multiband conduction
thermoelectric
zintl phase

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1007/s11664-013-2509-z

Cite this

@article{7449173cc2b54d81abe18016f1f687da,

title = "Low-temperature physical and thermoelectric properties of Ba 8Ni5Ge41",

abstract = "Resistivity, Hall resistivity, thermopower, thermal conductivity and magnetization are reported for polycrystalline Ba8Ni 5Ge41. Ba8Ni5Ge41 is diamagnetic with susceptibility χdia = (-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 Ba8Ni 5Ge41 is 0.0016 at about 278 K.",

keywords = "Clathrates, multiband conduction, thermoelectric, zintl phase",

author = "Jingtao Xu and Jiazhen Wu and Yoichi Tanabe and Satoshi Heguri and Gang Mu and Hidekazu Shimotani and Katsumi Tanigaki",

note = "Funding Information: The research was partially supported by Scientific Research on Priority Areas of New Materials Science Using Regulated Nano Spaces, the Ministry of Education, Culture, Sports, Science, and Technology of Japan and Grants-in-Aid (No. 24684023, No. 23740251, and No. 23510147). The work was partially supported by Tohoku GCOE Program and by the approval of the Japan Synchrotron Radiation Research Institute (JASRI). This work was also partially supported by the Joint Studies Program (2011) of the Institute for Molecular Science, and the fusion research (2012) of WPI-AIMR at Tohoku University.",

year = "2013",

month = jul,

doi = "10.1007/s11664-013-2509-z",

language = "English",

volume = "42",

pages = "2025--2029",

journal = "Journal of Electronic Materials",

issn = "0361-5235",

publisher = "Springer New York",

number = "7",

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TY - JOUR

T1 - Low-temperature physical and thermoelectric properties of Ba 8Ni5Ge41

AU - Xu, Jingtao

AU - Wu, Jiazhen

AU - Tanabe, Yoichi

AU - Heguri, Satoshi

AU - Mu, Gang

AU - Shimotani, Hidekazu

AU - Tanigaki, Katsumi

N1 - Funding Information: The research was partially supported by Scientific Research on Priority Areas of New Materials Science Using Regulated Nano Spaces, the Ministry of Education, Culture, Sports, Science, and Technology of Japan and Grants-in-Aid (No. 24684023, No. 23740251, and No. 23510147). The work was partially supported by Tohoku GCOE Program and by the approval of the Japan Synchrotron Radiation Research Institute (JASRI). This work was also partially supported by the Joint Studies Program (2011) of the Institute for Molecular Science, and the fusion research (2012) of WPI-AIMR at Tohoku University.

PY - 2013/7

Y1 - 2013/7

N2 - Resistivity, Hall resistivity, thermopower, thermal conductivity and magnetization are reported for polycrystalline Ba8Ni 5Ge41. Ba8Ni5Ge41 is diamagnetic with susceptibility χdia = (-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 Ba8Ni 5Ge41 is 0.0016 at about 278 K.

AB - Resistivity, Hall resistivity, thermopower, thermal conductivity and magnetization are reported for polycrystalline Ba8Ni 5Ge41. Ba8Ni5Ge41 is diamagnetic with susceptibility χdia = (-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 Ba8Ni 5Ge41 is 0.0016 at about 278 K.

KW - Clathrates

KW - multiband conduction

KW - thermoelectric

KW - zintl phase

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