Thermal conductivity characterization in bulk Zn(Mn,Ga)O4 with self-assembled nanocheckerboard structures

Atsuko Kosuga, Ken Kurosaki, Kunio Yubuta, Anek Charoenphakdee, Shinsuke Yamanaka, Ryoji Funahashi

研究成果: ジャーナルへの寄稿学術誌査読

6 被引用数 (Scopus)

抄録

The thermal conductivity of intragranular heterogeneous bulk Zn(Mn,Ga)O4, where two distinct types of rectangular nanorod with different compositions, ZnMn1.7Ga0.3O4 and ZnMn0.5Ga1.5O4, spontaneously interlace to form a cross-sectional checkerboard pattern, was investigated in the temperature range from 303 to 873 K. The thermal conductivity of this intragranular heterogeneous oxide is lower than that of the intergranular analogue and locates below the theoretical minimum limit of the mixture. We show for the first time that this self-assembled nanostructured Zn(Mn,Ga)O4 can effectively reduce thermal conductivity, providing a new insight into the field of thermoelectric oxides.

本文言語英語
論文番号010201
ジャーナルJapanese journal of applied physics
48
1
DOI
出版ステータス出版済み - 1月 20 2009
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 工学(全般)
  • 物理学および天文学(全般)

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