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Growth and properties of BaZnGeO4 crystals

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Abstract

Single crystals of BaZnGeO4 have been grown by the Czochralski pulling method from a stoichiometric melt of barium, zinc and germanium oxides. The crystals were colourless, up to 24 mm in diameter and 35 mm length, and their composition corresponded to the formula Ba0.978Zn0.986Ge1.018O4. X-ray diffraction analysis revealed that the crystal structure was a modified BaAl2O4 type with the hexagonal cell parameters of a 0=92.97 nm and c 0=352.84 nm. Phase transitions were observed at 520 K and 1108 K from measurements of DTA, thermal dilatometry and dielectric constants, and by high temperature X-ray precession photography.

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Authors and Affiliations

  1. Research Institute for Iron, Steel and Other Metals, Tokohu University, 980, Sendai, Japan

    H. Takei & S. Tsunekawa

  2. Department of Applied Physics, Faculty of Engineering, Tokohu University, 980, Sendai, Japan

    M. Maeda

Authors
  1. H. Takei
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  2. S. Tsunekawa
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  3. M. Maeda
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Takei, H., Tsunekawa, S. & Maeda, M. Growth and properties of BaZnGeO4 crystals. J Mater Sci 15, 2612–2618 (1980). https://doi.org/10.1007/BF00550767

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  • DOI: https://doi.org/10.1007/BF00550767

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