Thermal Conductivity of Nano-porous Bi<sub>0.4</sub>Te<sub>3.0</sub>Sb<sub>1.6</sub>

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Other Title
  • Bi<sub>0.4</sub>Te<sub>3.0</sub>Sb<sub>1.6</sub>ナノ多孔体の熱伝導率
  • Bi0.4Te3.0Sb1.6ナノ多孔体の熱伝導率
  • Bi0 4Te3 0Sb1 6ナノ タコウタイ ノ ネツ デンドウリツ
  • Thermal Conductivity of Nano-porous Bi0.4Te3.0Sb1.6

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Abstract

The thermal conductivity of nano-porous Bi0.4Te3.0Sb1.6 prepared by a nano-particle coating method is measured at temperature range from 100 K to 300 K by using a 3ω method. Nanoparticle Bi0.4Te3.0Sb1.6 thin films exhibit an order of magnitude reduction in thermal conductivity compared to that of bulk alloys. The reduction of thermal conductivity is clarified by employing a simplified phonon scattering model. As a result, we considered that the phonon scattering at the nano-porous is responsible for the observed reduction in thermal conductivity.

Journal

  • Netsu Bussei

    Netsu Bussei 24 (2), 94-100, 2014

    JAPAN SOCIETY OF THERMOPHYSICAL PROPERTIES

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