한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제29권9호
  • /
  • Pages.689-694
  • /
  • 1992
  • /
  • 1229-7801(pISSN)
  • /
  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
권호 표지

Verneuil법에 의한 $SrTiO_3$ 단결정 성장

$SrTiO_3$ Single Crystal Growth by Verneuil Method

  • 최익서 (한양대학교 무기재료공학과) ;
  • 조현 (한양대학교 무기재료공학과) ;
  • 최종건 (한양대학교 무기재료공학과) ;
  • 오근호 (한양대학교 무기재료공학과)
  • Choi, I.S. (Dept. of Inorganic Materials Eng., Hanyang University) ;
  • Cho, H. (Dept. of Inorganic Materials Eng., Hanyang University) ;
  • Choi, J.K. (Dept. of Inorganic Materials Eng., Hanyang University) ;
  • Orr, K.K. (Dept. of Inorganic Materials Eng., Hanyang University)
  • 발행 : 1992.09.01
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초록

Strontium Titanate single crystal is grown by Verneuil method. Feed materials were prepared by coprecipitation method which started with Sr(NO3)2 and TiCl4. SrTiO3 can not be grown from feed materials having the stoichiometric components due to volatilization of SrO, when the powder added more 3 wt% SrO used, the crystal can be grown. Growth conditions that the pressure of oxygen and hydrogen gas was 5 psi, the flow rate of oxygen and hydrogen was 7.3 and 30ι/min respectively, the growth rate was 20 mm/hr were optimum. The grown single crystal has the diameter of 10~15 mm and its length is 30~40 mm. The grown crystal was deep brown color and somewhat transparent. The color of grown crystal was lightened after annealing.

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참고문헌

  1. Gems made by Man K. Nassan
  2. Crystal Structure Helen D. Megaw
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  4. Growth of Crystals v.2 A.V. Shubnikov
  5. SI Chemical Data G.H. Aylward
  6. J. Appl. Phys. v.36 New Oxy-Hydrogen Burner for Flame Fusion Joseph A. Adamski
  7. Crystal Growth C.H.L. Goodman
  8. The Art and Science of Growing Crystals J.J. Gilman
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  10. U.S. Pantent 2,852,890 W.Drost;R.W. Kebler
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  12. J. Crystal. Growth v.41 Flame-Fusion Growth of SrTiO₃ J.G. Bednorz;H.J. Scheel
  13. J. Am. Ceram. Soc. v.51 Plasma Heat Transfer in Verneuil Crystal Growth D.T. Williams;W.A. Smith
  14. Kristallografiya v.27 The Thermal Field in a Furnace for Growing Crystal by Verneuil Method A.P. Chirkin;A.L. Pustyl'nik;O.G. Kapachinsleaya
  15. J. Am. Ceram. Soc. v.71 no.4 Defect Structure and Electrical Properties of Single Crystal $Ba_{0.03}Sr_{0.97}TiO_3$ Gyeong Man Choi;Harry L. Tuller