The Growth of Defects $ZnWO_4$ Single Crystals

$ZnWO_4$ 단결정 성장과 결함

  • 조병곤 (한양대학교 무기재료공학과) ;
  • 오근호 (한양대학교 무기재료공학과)
  • Published : 1990.04.01

Abstract

ZnWO4 single crystals were grown by Czochralski method. And the orientation of grown crystals were determined by Laue back reflection, and the crystals were siliced at (100), (010), (001) face before polishing. The morphologys and distribution of etch pits on each face were observed by optical microscopy. In the present study, we understood that dislocation distributjioon rely on shape of solid-liquid interface, and secondary phase acts on the dislocation source. We also observed dislocation trace(etch pits) of (100) slip plane on (010) cleavage plane.

Keywords

References

  1. Z. Physik Chem. IB F. K. Broch
  2. I. Mat-Natur. v.K1 Shrifter Norske Videnskaps-Akad. Olso
  3. Acta Cryst. v.10 The Structur of NiWO₄ Rolland O.;Keeling JR.
  4. J. Applied Physics v.35 no.4 Zinc Tungstate Crystal Growth, Dislocations and Crystallographys S. O'Hara
  5. Applied Opitcs v.3 no.9 Zinc Tungstate-Some Optical Properties C.J. Spengler;S. O'Hara
  6. Applied Phys. Lett. v.36 no.4 Scintillation Study of ZnWO₄Single Crystals Tetsu Oi;Kazumasa Takagi;Tokuumi Fukazawa
  7. J. Applied Physics v.33 Zinc Tungstates for Microwave Maser Application L G Van Uitert;S. Preziosi
  8. Physical Review v.128 no.4 Paramagnetic Resonace Spectra of $Cr^{3-}$in ZnWO₄ S.K. Kurtz;W.G. Nilsen
  9. J. Applied Physics v.36 no.5 Czochralski Growth of Low-Dislocation-Density Zinc Tungstate Crystals S. O'Hara;G.M McManus
  10. J. Crystal Growth v.52 Growth of High Purity ZnWO₄Single Crystals K. Takagi;T. Oi;T. Fukazawa
  11. J. Crystal Grwoth v.79 Improvement of the Quality of ZnWO₄Single Crystals for Scintillation Applications I. Foldvari;A. Peter
  12. J. Korean Ceramic Society v.23 no.4 ZnWO₄단결정 성장 임창상;오근호
  13. J Electrochem. Soc. Solid-State Science and Technology v.133 no.5 Czochralski Growth of Crystals, Simple Models for Growth Rate and Imterface Shape R.K. Srivastava;P A. Rama Chandran;M.P. Dudukovic
  14. International Tables for X-Ray Crystallography v.1 Norman F.M. Henry;Kathleen Lonsdale
  15. Etching of Crystal Theory, Experiment and Application v.15 K. Sangwal
  16. J. Crystal Growth v.49 no.515 Fluid-Flow Effects on Gas Bubble Entrapment in Czochralski Grow Oxide Crystal Shintaro Miyazawa
  17. J Korean Ceramic Society v.25 no.1 Saw Device 응용을 위한 LiNbO₃ 단결정 성장 최종건;오근호
  18. J. Applied Physics v.39 no.9 Dislocation Arrangements in Zinc Tungstate S. O'Hara;G.M. McManus;Roessler