Dielectric Properties of Double-Oxide Ceramics in the System Ln<SUB>2</SUB>O<SUB>3</SUB>–TiO<SUB>2</SUB> (Ln=La, Nd and Sm)

J-STAGE
  • Takahashi Junichi
    Department of Materials Science and Engineering, Nagoya Institute of Technology
  • Hayashi Takashi
    Department of Materials Science and Engineering, Shonan Institute of Technology
  • Kageyama Keisuke
    R & D Division, Yamasaki Works, Sumitomo Special Metals Co., Ltd.

書誌事項

公開日
1991
公開者
公益社団法人 応用物理学会

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説明

A systematic investigation on dielectric property changes with compositional variation was carried out for binary compound ceramics which were fabricated by the chemical powder preparation method in the identical systems Ln2O3–TiO2 (Ln=La, Nd and Sm). The temperature coefficient of permittivity (TCεr) for those dielectrics was found to show a considerable deviation from a simple relation of TCεr=−εr·αL. It also found that the solubility limits of Sm3+ into the Nd3+ lattice were greatly extended in the binary compounds up to ∼80 or 90 mol%. Different dielectric property changes in the solid solutions with lanthanide substitution (La→Nd→Sm) were discussed on the basis of the different contributions of substituted ions to the polarization.

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