Low-Frequency Vibrations of Aluminas.

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  • SATO Taichi
    Honorary Professor, Dr. Sc., Dr. Eng., Faculty of Engineering, Sizuoka University, Hamamatsu, 432 Japan ;Visiting Professor, Department of Materials and Metallurgical Engineering, Queen"s University, Kingston, Ontario K7L 3N6, Canada

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Abstract

The γ-, δ-, λ-, κ-, η-, θ- and α-aluminas were prepared by heating the crystalline aluminium hydroxides at selected temperatures. The vibrational spectra of those aluminas were determined in the far-infrared (FIR) region. In order to assign the low-frequency vibrations of aluminas, the characteristic frequencies of octahedral AlO6 and tetrahedral AlO4 groups were determined by using both the crystal structures of θ- and α- aluminas.

Journal

  • Shigen-to-Sozai

    Shigen-to-Sozai 114 (13), 987-990, 1998

    The Mining and Materials Processing Institute of Japan

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