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J. Korean Ceram. Soc. > Volume 43(3); 2006 > Article
Journal of the Korean Ceramic Society 2006;43(3): 173.
doi: https://doi.org/10.4191/kcers.2006.43.3.173
Sr1-xBaxNb2O6의 유전 특성에 대한 산화/환원 열처리의 영향
강봉훈, 백영섭1, 주기태2
한국과학기술연구원 복학기능세라믹스연구센터, 서강대학교 물리학과, 극동대학교 안경광학과
1필코전자 기술연구소
2한국과학기술연구원 복학기능세라믹스연구센터
Oxidation/Reduction Effect on Dielectric Properties of Sr1-xBaxNb2O6
Bong-Hoon Kang, Young-Sop Paek1, Gi-Tae Joo2
Multifunctional Ceramics Research Center, Korea Institute of Science and Technology, Department of Physics, Sogang University, Department of Visual Optics, Far East University
1Pilkor Electronics Co. Ltd.
2Multifunctional Ceramics Research Center, Korea Institute of Science and Technology
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.ጊ砀Ѐ〰㐻Ԁ䭃䑎䷙ᜓ੿6〰㬅K䍄乍쐗ᔌ㬀؀〰㔮ㄻԀ䭃䑎䴀
Key words: Strontium Barium Niobate (SBN), Oxidation/Reduction, Dielectric properties, Diffused Phase Transition (DPT)
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