The growth of ruby single crystals
作者: ALEKSANDAR GOLUBOVICSLOBODANKA NIKOLICSTEVAN DJURICANDREJA VALCIC
刊名: Journal of the Serbian Chemical Society, 2005, Vol.70 (1), pp.87
来源数据库: Directory of Open Access Journals
关键词: Czochralski techniquerubygrowthsingle crystaletching
原始语种摘要: Ruby (Cr:Al2O3) single crystals were grown by the Czochralski technique in an argon atmosphere. The critical crystal diameter dc = 1.0 cm and the critical rate of rotation wc = 20 rpm were calculated by equations of the hydrodynamics of the melt. The rate of crystal growthwas experimentally obtained to be 2.7 mm/h. For chemical polishing, conc. H3PO4 at 593 K for an exposure of 3 hours was determined. Conc. H3PO4 at 523 K for an exposure of 3 h was found to be a suitable etching solution. The lattice parameters a = 0.47627(6) nm and c = 1.301(1) nm were determined by X-ray powder diffraction. The obtained results are discussed and compared with published data.
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关键词翻译
关键词翻译
  • single 单独的
  • growth 生长
  • lattice 
  • grown 生长
  • parameters 参数
  • etching 蚀刻法
  • calculated 计算的
  • rotation 旋转
  • diameter 直径
  • diffraction 衍射