Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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A Brief Review on Polarization Switching Kinetics in Fluorite-structured Ferroelectrics

플루오라이트 구조 강유전체 박막의 분극 반전 동역학 리뷰

  • Kim, Se Hyun (Technology Licensing Office, Institute for Research & Industry Cooperation, Pusan National University) ;
  • Park, Keun Hyeong (School of Materials Science and Engineering, Pusan National University) ;
  • Lee, Eun Been (School of Materials Science and Engineering, Pusan National University) ;
  • Yu, Geun Taek (School of Materials Science and Engineering, Pusan National University) ;
  • Lee, Dong Hyun (School of Materials Science and Engineering, Pusan National University) ;
  • Yang, Kun (School of Materials Science and Engineering, Pusan National University) ;
  • Park, Ju Yong (School of Materials Science and Engineering, Pusan National University) ;
  • Park, Min Hyuk (School of Materials Science and Engineering, Pusan National University)
  • 김세현 (부산대학교 산학협력단 기술사업부) ;
  • 박근형 (부산대학교 재료공학부) ;
  • 이은빈 (부산대학교 재료공학부) ;
  • 유근택 (부산대학교 재료공학부) ;
  • 이동현 (부산대학교 재료공학부) ;
  • 양건 (부산대학교 재료공학부) ;
  • 박주용 (부산대학교 재료공학부) ;
  • 박민혁 (부산대학교 재료공학부)
  • Received : 2020.12.16
  • Accepted : 2020.12.30
  • Published : 2020.12.31
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Abstract

Since the original report on ferroelectricity in Si-doped HfO2 in 2011, fluorite-structured ferroelectrics have attracted increasing interest due to their scalability, established deposition techniques including atomic layer deposition, and compatibility with the complementary-metal-oxide-semiconductor technology. Especially, the emerging fluorite-structured ferroelectrics are considered promising for the next-generation semiconductor devices such as storage class memories, memory-logic hybrid devices, and neuromorphic computing devices. For achieving the practical semiconductor devices, understanding polarization switching kinetics in fluorite-structured ferroelectrics is an urgent task. To understand the polarization switching kinetics and domain dynamics in this emerging ferroelectric materials, various classical models such as Kolmogorov-Avrami-Ishibashi model, nucleation limited switching model, inhomogeneous field mechanism model, and Du-Chen model have been applied to the fluorite-structured ferroelectrics. However, the polarization switching kinetics of fluorite-structured ferroelectrics are reported to be strongly affected by various nonideal factors such as nanoscale polymorphism, strong effect of defects such as oxygen vacancies and residual impurities, and polycrystallinity with a weak texture. Moreover, some important parameters for polarization switching kinetics and domain dynamics including activation field, domain wall velocity, and switching time distribution have been reported quantitatively different from conventional ferroelectrics such as perovskite-structured ferroelectrics. In this focused review, therefore, the polarization switching kinetics of fluorite-structured ferroelectrics are comprehensively reviewed based on the available literature.

Keywords

Acknowledgement

이 논문은 부산대학교 기본연구지원사업(2년)에 의하여 연구되었음.

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