Fabrication and Characterization of LnBi2TiNbO9-Based Ceramics

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概要

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• LnBi2TiNbO9 (LnBTN) ceramics which have a rare metal Ln (=La, Nd, Sm, and Gd) in the A-site were examined. To study the characteristics of these compounds, SmxBi3-xTiNbO9 (SmB) ceramics, which are SmBi2TiNbO9 (SmBTN), [any of the LnBTN ceramics], and the Bi3TiNbO9 (BTN) system were also examined. The samples were prepared by a conventional sintering technique at 1150°C to 1250°C for 2 h. In X-ray powder diffraction (XRD), the phases of the LnBTN and SmB ceramics were identified to be single phase. The lattice constants of the $a$ and $c$ axes decreased with increasing atomic number of Ln in LnBTN ceramics. Based on the increasing amount of substitution of SmBTN, the orthorhombic structure of SmB ceramics gradually became the pseudotetragonal-structured. In SmB ceramics, the Curie temperature of samples gradually decreased when $x$ increased. In the sample, the phase curve showed no spurious in the thickness extensional vibration mode (TE mode).

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2003-09-15

著者

• Sugaya Yutaka

  Toko Inc., 828 Tamagawa, Tamagawa-mura, Hiki-gun, Saitama, Japan

• Shoji Kazuo

  Ashikaga Institute of Technology, 268-1 Ohmae-cho, Ashikaga, Tochigi, Japan

• Sakata Koichiro

  Science University of Tokyo, 2641 Yamazaki, Noda-shi, Chiba, Japan

関連論文

• Fabrication and Characterization of LnBi2TiNbO9-Based Ceramics

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