서지주요정보
$V_2O_5$를 첨가한 PZT 의 소결 및 초전 특성에 관한 연구 = Sintering and pyroelectricity of PZT with addition of $V_2O_5$
서명 / 저자 $V_2O_5$를 첨가한 PZT 의 소결 및 초전 특성에 관한 연구 = Sintering and pyroelectricity of PZT with addition of $V_2O_5$ / 백봉주.
저자명 백봉주 ; Baik, Bong-Joo
발행사항 [대전 : 한국과학기술원, 1995].
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소장정보

등록번호

8005724

소장위치/청구기호

학술문화관(문화관) 보존서고

MCM 95005

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

PZT pyroelectric materials have been studied by many researchers because of their high pyroelectric coefficient and low dielectric constant at room temperature which enhances the figure of merits of the materials. However, sintering temperature of the commercial PZT pyroelectric materials is above 1200℃ which causes the volatilization of PbO from the PZT materials during sintering. Inhibition of PbO volatilization is required to obtain PZT pyroelectrics with good properties and to produce thick films of PZT pyroelectrics. In this study, the low temperature sintering behavior of the PZT(94/6) ceramics with addition of $V_2O_5$ as sintering additives was investigated. By addition of 0.1 to 1 wt% $V_2O_5$, dense PZT ceramics was obtained by sintering at 900℃ for 3 h without volatilizatiion of PbO. It has been well known that the PZT(94/6) ceramics has high pyroelectric coefficient in transition temperature by phase transition from a low temperature rhombohedral ($FR_{LT}$) to a high temperature rhombohedral ($FR_{HT}$) structure and has pyroelectric coefficient of 23 nC/㎠K at room temperature. It is necessary to move the transition temperature toward room temperature, however, in order to applicate the PZT(94/6) ceramics as an IR sensor at room temperature. The range of transition of the PZT ceramics with addition of $V_2O_5$ was broader than that of the pure PZT and the pyroelectric coefficient of the $V_2O_5$-added PZT ceramics was increased to 50~70 nC/㎠K at room temperature. Microstructures of the PZT ceramics were varied with the amounts of $V_2O_5$ and the methods of $V_2O_5$ addition, which also affected the pyroelectricity of PZT. The maximum pyroelectric coefficient at the transition temperature was increased, as the mean grain size was increased.

서지기타정보

서지기타정보
청구기호 {MCM 95005
형태사항 ii, 58 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Bong-Joo Baik
지도교수의 한글표기 : 김종희
지도교수의 영문표기 : Chong-Hee Kim
학위논문 학위논문(석사) - 한국과학기술원 : 무기재료공학과,
서지주기 참고문헌 : p. 54-58
주제 Sintering.
Pyroelectricity.
Microstructure.
Phase transformations (Statistical physics)
소결. --과학기술용어시소러스
초자체. --과학기술용어시소러스
첨가물 효과. --과학기술용어시소러스
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