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Physical properties of hydrothermally grown gallium orthophosphate single crystals

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Abstract

GaPO4 single crystals have been hydrothermally grown by the horizontal temperature gradient method. The physical properties of these single crystals were measured. The following results were obtained: lattice parametersa = 0.490 nm andc = 1.105 nm, density ϱ = 3.56 g cm−3, Vickers hardnessH v = 7.06 × 109 Nm−2, refractive indicesn e = 1.611±0.006 andn 0 = 1.599±0.006, and birefringence Δn = +0.012. GaPO4 single crystals exhibited some similar properties to α-quartz and AlPO4 single crystals because of the similarity of their crystal structures.

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Authors and Affiliations

  1. Faculty of Engineering, Nagoya University, Furo-cho, Chikusa-ku, 464, Nagoya, Japan

    Shin-Ichi Hirano & Pan-Chae Kim

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  1. Shin-Ichi Hirano
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  2. Pan-Chae Kim
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Hirano, SI., Kim, PC. Physical properties of hydrothermally grown gallium orthophosphate single crystals. J Mater Sci 25, 4772–4775 (1990). https://doi.org/10.1007/BF01129940

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