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Journal of Inorganic Materials

Journal of Inorganic Materials

• Research Paper • Previous Articles     Next Articles

Preparation of Large-size and High-quality γ-LiAlO2 Crystal

ZOU Jun1,2, ZHOU Sheng-Ming1, ZHANG Lian-Han1, XU Jun1   

  1. 1. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; 2. Graduate school of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2004-12-22 Revised:2005-02-02 Published:2006-01-20 Online:2006-01-20

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Abstract: Transparent γ-LiAlO2 crystal was quickly grown by Cz technique. It was 45mm in dimension and 50mm long. However, it appeared a dendriform, milky core. The samples taken from transparent
part and milky one, were ground for examining X-ray diffraction. The diffraction peaks of samples can be indexed by γ-LiAlO2. The FWHM values shown by X-ray rocking curves were 116.9
and 132.0arcsec, respectively. The corresponding FWHM value was dropped to 44.2 and 53.3arcsec through three VTE processes. Through linking fast growth with Vapor Transport Equilibration (VTE)
technique, high quality LAO slice with the dimension of φ40mm×40mm was obtained.

Key words: vapor transport equilibration technique, lithium aluminate, Cz technique

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