| 铁电体中相变临界尺寸的研究现状 |
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| 引用本文： | 宋红章,李永祥,殷庆瑞.铁电体中相变临界尺寸的研究现状[J].无机材料学报,2007,22(4):583-589. |
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| 作者姓名： | 宋红章 李永祥 殷庆瑞 |
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| 作者单位： | 1. 中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室, 上海 200050; 2. 中国科学院研究生院,北京 100049 |
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| 基金项目： | 国家重点基础研究发展计划(973计划);国家自然科学基金 |
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| 摘 要： | 从铁电薄膜和铁电颗粒两大方面回顾了处理尺寸效应的理论研究方法(包括宏观的热力学唯像理论、微观的横场Ising模型和第一性原理计算)和铁电相变临界尺寸的理论预测. 总结了从50年代以来实验中观测到的各种铁电材料的临界尺寸, 简单介绍了铁电纳米陶瓷的一些尺寸效应, 并叙述了近几年才开始报道的铁电纳米线中的铁电相变. 最后指出了目前研究现状中存在的一些问题.
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| 关 键 词： | 铁电薄膜 铁电颗粒 铁电陶瓷 铁电纳米线 相变临界尺寸 |
| 文章编号： | 1000-324X（2007）04-0583-07 |
| 收稿时间： | 2006-8-28 |
| 修稿时间： | 2006-08-28 |
Progress in Research on Critical Size of Phase Transition in Ferroelectrics |
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| SONG Hong-Zhang,LI Yong-Xiang,YIN Qing-Rui.Progress in Research on Critical Size of Phase Transition in Ferroelectrics[J].Journal of Inorganic Materials,2007,22(4):583-589. |
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| Authors: | SONG Hong-Zhang LI Yong-Xiang YIN Qing-Rui |
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| Affiliation: | 1. State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 2. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Theoretical approaches (such as macroscopic thermodynamics phenomenological approach, microscopic transverse field Ising model and first-principles calculation) in dealing with size effect and predicts on critical size of ferroelectric phase transition are reviewed from two aspects, ferroelectric film and ferroelectric grain, respectively. Critical sizes of some ferroelectrics observed in experiments are summarized from 1950s. Some size effects of ferroelectric ceramics are introduced simply. Ferroelectric phase transitions of ferroelectric nanowires reported recently are narrated too. Finally, some problems in researching progress are pointed out. |
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| Keywords: | ferroelectric films ferroelectric grains ferroelectric ceramics ferroelectric nanowires critical size of phase transition |
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