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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국진공학회(ASCT) Applied Science and Convergence Technology Applied Science and Convergence Technology Vol.28 No.4
- 발행연도
- 2019.7
- 수록면
- 126 - 129 (4page)
- DOI
- 10.5757/ASCT.2019.28.4.126
이용수
초록· 키워드
오류제보하기
Acceptor and donor dopants have a significant effect on the dielectric properties of BaTiO₃. In this paper, Sb, Nb, and Ta were added to BaTiO₃ solid solutions to analyze the specific change of dielectric property based on temperature. First, the crystal stabilization process was analyzed by X-ray difraction and scanning eletron microscopy. Second, the optimum sintering conditions were confirmed according to the results, and specimens were prepared to compare their characteristics. In this experiment, it was found that the calcining condition was ~1100 °C and the sintering condition was ~1300 °C, although the heat treatment conditions were slightly different depending on the additive materials. The dielectric constants of BaTiO₃ doped with 1.0 mole% of Sb, Nb, and Ta reached 4741, 2055, and 2963 at room temperature, and the transition temperatures were ~67, ~116, and ~109 °C, respectively, which shifted to very low temperatures from the transition temperature of pure BaTiO₃ (~125 °C). The results of 1/K vs. T and ln[(1/K)-(1/K<SUB>m</SUB>)] vs. ln(T-T<SUB>m</SUB>) were partially different from those of pure BaTiO₃, having a temperature slightly higher than the phase transition temperature. This abnormal ferroelectric phase transition property of impurity-substituted BaTiO₃ was confirmed by using the modified Curie-Weiss rule.
목차
Abstract
Ⅰ. Introduction
Ⅱ. Experimental details
Ⅲ. Results and discussion
Ⅳ. Conclusions
References
참고문헌 (10)
참고문헌 신청
H. F. Kay / 1949 / Phil. Mag 40:1019
A. J. Moulson / 2003 / Electroceramics / Wiley Press
M. Mostafa / 2019 / Sci. Eng. Compos. Mater 26:62
김연중 / 2009 / Microstructural Characterization and Dielectric Properties of Barium Titanate Solid Solutions with Donor Dopants / Bulletin of the Korean Chemical Society 30(6):1267~1273
김연중 / 2017 / Effects of Nb5+ Addition on Microstructure and Dielectric Properties of BaTiO3 / Applied Science and Convergence Technology 26(5):143~147
A. J. Moulson / 2003 / Electroceramics / Wiley Press
M. Mostafa / 2019 / Sci. Eng. Compos. Mater 26:62
김연중 / 2009 / Microstructural Characterization and Dielectric Properties of Barium Titanate Solid Solutions with Donor Dopants / Bulletin of the Korean Chemical Society 30(6):1267~1273
김연중 / 2017 / Effects of Nb5+ Addition on Microstructure and Dielectric Properties of BaTiO3 / Applied Science and Convergence Technology 26(5):143~147
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UCI(KEPA) : I410-ECN-0101-2019-420-001277677