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Preparation of needle-like TiZrO4 and PZT powders

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Abstract

Needle-like TiZrO4 powder was prepared by reacting TiO2 and ZrO2 in the presence of molten chloride (NaCI or KCI) or sulphate (Na2SO4 or Li2SO4). Either a single-phase TiZrO4 or a three-phase mixture (TiZrO4, ZrO2 and amorphous TiO2) was obtained from the chloride or sulphate system. Particle morphology was dependent on heating temperature and duration as well as salt species. Needle-like PZT powder was obtained by reacting needle-like TiZrO4 powder with PbO above 750 °C. The PZT powder obtained at 750°C was composed of both tetragonal and rhombohedral phases, indicating a wide compositional variation. An increase in heating temperature reduced the degree of compositional variation, but enhanced the deformation of needle-like particles.

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Author notes

  1. T. Mifune

    Present address: Matsushita Electric Co. Ltd., 1006 Kadoma, Kadoma-shi, Japan

  2. Y. Hayashi

    Present address: NEC Corporation, 1120 Shimokuzawa, Sagamihara, Kanagawa, Japan

Authors and Affiliations

  1. Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, 223, Yokohama, Japan

    T. Kimura, A. Takenaka, T. Mifune, Y. Hayashi & T. Yamaguchi

Authors
  1. T. Kimura
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  2. A. Takenaka
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  3. T. Mifune
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  4. Y. Hayashi
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  5. T. Yamaguchi
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Kimura, T., Takenaka, A., Mifune, T. et al. Preparation of needle-like TiZrO4 and PZT powders. J Mater Sci 27, 1479–1483 (1992). https://doi.org/10.1007/BF00542907

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  • DOI: https://doi.org/10.1007/BF00542907

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