无机材料学报

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高技术陶瓷材料点缺陷化学和物理

周志刚, 唐子龙   

  1. 清华大学 材料科学与工程系 新型陶瓷和精细工艺国家重点实验室, 北京 100084
  • 收稿日期:2008-12-10 修回日期:2009-02-03 出版日期:2009-05-20 网络出版日期:2009-05-20

Chemistry and Physics of Point Defects in Advanced Ceramics

ZHOU Zhi-Gang, TANG Zi-Long   

  1. Department of Material Sciences & Engineering, State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084,China
  • Received:2008-12-10 Revised:2009-02-03 Published:2009-05-20 Online:2009-05-20

摘要: 无机材料点缺陷的研究具有基础性和前沿性特色,是当前高技术陶瓷发展中的一个新兴的技术支撑,具有诱人的应用前景,甚为世人瞩目.点缺陷结构与高技术陶瓷的物理和化学性能密切相关.本文就点缺陷能量、生成、缔合、点缺陷和界面间的互作用等化学和物理机制,点缺陷的电子学以及点缺陷工程研究中的最新进展等方面进行了综述.本文还就点缺陷对改善高技术陶瓷的电、磁、光、力和生物等性能所提供的美好前景进行了评述,以期有助于今后我国在无机材料领域原创性和开拓性研究的深入发展.

关键词: 点缺陷, 氧空位, Brouwer-Kroger-Vink线图, 点缺陷工程, 化学键, 高技术陶瓷

Abstract: he structure and behavior of defects, especial point defects are the key to understand the structural imperfection of structuresensitive advanced ceramics and related devices. A conception of chemistry and physics, especially for electronics on the point defect in the advanced ceramics is briefly reviewed in the present work. Several achieved examples of defect engineering and microscopic control technology for improving some ceramics/devices of electric, magnetic, optical, mechanical and/or biological behavior by defect improve/rebuild are discussed. The knowledge of how defects influence the ceramics/device performance is revealed and point defects provide very useful tools for understanding their basic characteristics and to open up their potentiality of the new advanced ceramics/devices in the near future.

Key words: point defect, oxygen vacancies, Brouwer-Kroger-Vink diagram, defect engineering, chemical bound, advanced ceramics

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