Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Oxidation/Reduction Effect on Dielectric Properties of Sr1-xBaxNb2O6

Sr1-xBaxNb2O6의 유전 특성에 대한 산화/환원 열처리의 영향

  • Kang, Bong-Hoon (Multifunctional Ceramics Research Center, Korea Institute of Science and Technology, Department of Physics, Sogang University, Department of Visual Optics, Far East University) ;
  • Paek, Young-Sop (Pilkor Electronics Co. Ltd.) ;
  • Joo, Gi-Tae (Multifunctional Ceramics Research Center, Korea Institute of Science and Technology)
  • 강봉훈 (한국과학기술연구원 복학기능세라믹스연구센터, 서강대학교 물리학과, 극동대학교 안경광학과) ;
  • 백영섭 (필코전자 기술연구소) ;
  • 주기태 (한국과학기술연구원 복학기능세라믹스연구센터)
  • Published : 2006.03.01
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Abstract

${Sr_{1-x}Ba_xNb_2O_6$(SBN) have been obtained in Pt crucible by melting and cooling in air atmosphere. Some SBNs being at the bottom of the crucible are black and transparent, and the other SBNs colorless. The black SBN became to be colorless by oxidation heat treatment $1,300^{\circ}C$ for 4 h, Curie temperature is changed by colorless change of black SBN. The reason seems to be $Nb^{5+}$ oxidation of some $Nb^{4+}$ ions in SBN or effect of unknown impurities. Diffused Phase Transition (DPT) was appeared during heating and cooling process. Various sintered SBN ceramics specimen showed relaxor characteristics.

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References

  1. G. T. Joo, J. D. Kim, B. H. Kang, and Y. S. Paek, KIST Report UCE 1709(3)-7045-1
  2. A. M. Glasss, 'Investigation of the Electrical Properties of $Sr_{1-x}Ba_xNb_2O_6$ with Special Reference to Pyroelectric Detection,' J. Appl. Phys., 40 4699-713 (1969) https://doi.org/10.1063/1.1657277
  3. K. Megumi, N. Nagatsuma, Y. Kashiwada, and Y. Furuhata, 'The Congruent Melting Composition of Strontium Barium Niobate,' J. Mat. Sci., 11 1583-92 (1976) https://doi.org/10.1007/BF00737513
  4. S. Takekawa, Y. Furukawa, N. Kaneko, and K. Kitamura, 'Single Crystal Growth of SBN by the Floating Zone Method,' J. Cryst. Growth, 229 212-16 (2001) https://doi.org/10.1016/S0022-0248(01)01123-X
  5. K. Kakimoto, H. Kakemoto, A. Baba, S. Fujita, and Y. Masuda, 'Synthesis and Dielectric Properties of $Sr_xBa_{1-x}Nb_2O_6 $ Formed by YAG Laser Ablation,' J. Eur. Ceram. Soc., 21 1569-72 (2001) https://doi.org/10.1016/S0955-2219(01)00066-8