Sm<sub>2</sub>O<sub>3</sub>を添加したZnO焼結体の電気抵抗

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タイトル別名
  • Electrical Resistivity of ZnO Ceramics Doped with Sm<sub>2</sub>O<sub>3</sub>
  • Sm2O3 オ テンカシタ ZnO ショウケツタイ ノ デンキ テイコウ

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抄録

When dc voltage was applied to the fired ZnO specimens of low bulk densities, the current decreased with time for undoped specimens, whereas the current remained unchanged for Sm2O3-doped specimens. The resistivity increased remarkably with decreasing fired density. Using a model for initial sintering and Kaker's cubic model, neck radius between grains was calculated from relative density and grain size of fired specimens. The curve representing relation between resistivity and neck radius consists of two straight lines, and the radius at the cross point of these lines was thought to be equivalent to the Debye length. The Debye length was about 0.31μm and 0.53μm for undoped and Sm2O3-doped ZnO respectively.

収録刊行物

  • 窯業協會誌

    窯業協會誌 93 (1077), 230-236, 1985

    公益社団法人 日本セラミックス協会

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