한국전기전자재료학회논문지 (Journal of the Korean Institute of Electrical and Electronic Material Engineers)

  • 제35권5호
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  • Pages.445-451
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  • 2022
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  • 1226-7945(pISSN)
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  • 2288-3258(eISSN)
한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
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PZT-PZN 세라믹의 미세구조가 압전 특성 및 TCC 거동에 미치는 영향

Effect of Microstructure on Piezoelectric Properties and TCC Behavior in PZT-PZN Ceramics

  • 서인태 (한국전자기술연구원 융복합전자소재연구센터) ;
  • 최용수 (한국전자기술연구원 융복합전자소재연구센터) ;
  • 조유리 (한국전자기술연구원 융복합전자소재연구센터) ;
  • 강형원 (한국전자기술연구원 융복합전자소재연구센터) ;
  • 김강산 (호서대학교 신소재공학과) ;
  • 천채일 (호서대학교 신소재공학과) ;
  • 한승호 (한국전자기술연구원 융복합전자소재연구센터)
  • Seo, Intae (Electronic Convergence Materials and Devices Research Centers, Korea Electronics Technology Institute) ;
  • Choi, Yongsu (Electronic Convergence Materials and Devices Research Centers, Korea Electronics Technology Institute) ;
  • Cho, Yuri (Electronic Convergence Materials and Devices Research Centers, Korea Electronics Technology Institute) ;
  • Kang, Hyung-Won (Electronic Convergence Materials and Devices Research Centers, Korea Electronics Technology Institute) ;
  • Kim, Kang San (Department of Materials Science and Engineering, Hoseo University) ;
  • Cheon, Chae Il (Department of Materials Science and Engineering, Hoseo University) ;
  • Han, Seung Ho (Electronic Convergence Materials and Devices Research Centers, Korea Electronics Technology Institute)
  • 투고 : 2022.03.25
  • 심사 : 2022.04.06
  • 발행 : 2022.09.01
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초록

Ultrasonic sensor is suitable as a next-generation autonomous driving assist device because its lower price compared to that of other sensors and its sensing stability in the external environment. Although Pb(Zr, Ti)O3 (PZT)-relaxor ferroelectric system has excellent piezoelectric properties, the change in capacitance is large in the daily operating temperature range due to the low phase transition temperature. Recently, many studies have been conducted to improve the temperature stability of ferroelectric ceramics by controlling the grain size and crystal structure, so it is necessary to study the effect of the grain size on the piezoelectric properties and the temperature stability of PZT-relaxor ferroelectric system. In this study, the piezoelectric properties, phase transition temperature, and temperature coefficient of capacitance (TCC) of 0.9 Pb(Zr1-xTix)O3-0.1 Pb(Zn1/3Nb2/3)O3 (PZTx-PZN) ceramics with various grain sizes were investigated. PZTx-PZN ceramics with larger grain size showed higher piezoelectric properties and temperature stability, and are expected to be suitable for ultrasonic devices in the future.

키워드

과제정보

이 연구는 2019년도 및 2021년도 산업통상자원부 및 산업기술평가관리원(KEIT) 연구비 지원에 의한 연구임(20007131, 20016327).

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