한국결정성장학회:학술대회논문집 (Proceedings of the Korea Association of Crystal Growth Conference)

한국결정성장학회 (The Korea Association of Crystal Growth)
권호 표지

Crystal Growth of Chromium (4+) Ion Doped Yttrium Aluminum Garnet

  • Yu, Y.M. (Crystal Growth Lab., Korea Research Institute of Chemical Technology) ;
  • Jeong, S.J. (Crystal Growth Lab., Korea Research Institute of Chemical Technology) ;
  • Koh, J.C. (Crystal Growth Lab., Korea Research Institute of Chemical Technology)
  • 발행 : 1998.09.01
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초록

Four valence of Chromium ion doped Yttrium Aluminum Garnet crystals were grown by Floating Zone and Czochralski methods. Changes of valence for Chromium (3+) ion to Chromium (4+) were achieved by substitution of Yttrium ion in dodecahedral site to Calcium and by substitution of Aluminum in octahedral site to Magnesium. Growth conditions for high quality of crystals were investigated. Grown crystals were cut and polished and then observed various types of defects. Characterizations by means of measurement of density and lattice parameter as a function of solidification fraction were performed. Results of Q-switching test using grown crystals were also reported.

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