Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Study on Poling of LiNbO3 Fiber Single Crystals

LiNbO3 섬유 단결정의 분극에 관한 연구

  • Kang, Bong-Hoon (Department of Visual Optics, Far East University) ;
  • Jang, Jae-Hyuk (Division of Materials Science & Engineering, Hanyang University) ;
  • Choi, Duck-Kyun (Division of Materials Science & Engineering, Hanyang University) ;
  • Shin, Tae-Hee (Materials Science & Technology Research Division, Korea Institute of Science and Technology) ;
  • Joo, Gi-Tae (Materials Science & Technology Research Division, Korea Institute of Science and Technology)
  • 강봉훈 (극동대학교 안경광학과) ;
  • 장재혁 (한양대학교 신소재공학부) ;
  • 최덕균 (한양대학교 신소재공학부) ;
  • 신태희 (한국과학기술연구원 재료기술연구본부) ;
  • 주기태 (한국과학기술연구원 재료기술연구본부)
  • Published : 2009.07.31
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Abstract

Congruent or stoichiometric $LiNbO_3$ fiber single crystals were grown by the $\mu$-PD method, and the grown fiber crystals have the several (2 or 3) ridges with a diameter of $1.35{\sim}1.5\;mm$ and a length of $40{\sim}100\;mm$. In this $\mu$-PD process, different growth rates ($10{\sim}60\;mm/h$) were applied. Pt wire or $LiNbO_3$ crystal was used as a seed. The properties of grown $LiNbO_3$ fiber single crystals having a-axis or c-axis according to seeds were effected by the grown conditions(Pt tube diameter, pulling speed, after heater etc.). Disk-type $LiNbO_3$ samples were poled in condition of DC 5 V/cm at 1050, 1075 or $1100^{\circ}C$. XRD, SEM, conoscope image through the polarized microscope, $T_C$ measuring apparatus, optical transmittance measuring instrument are used to identify the properties of $LiNbO_3$.

Keywords

References

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