Size Driven Ferroelectric-Paraelectric Phase Transition from the Surface Energy Viewpoint
ZHONG Wei-Lie, WANG Yuan-Xu, ZHANG Pei-Lin
School of Physics and Microelectronics, State Key Laboratory of Crystal Materials, Shandong University, Ji’nan 250100
Size Driven Ferroelectric-Paraelectric Phase Transition from the Surface Energy Viewpoint
ZHONG Wei-Lie;WANG Yuan-Xu;ZHANG Pei-Lin
School of Physics and Microelectronics, State Key Laboratory of Crystal Materials, Shandong University, Ji’nan 250100
关键词 ：
77.80.Bh ,
68.18.Jk
Abstract ： The size driven ferroelectric-paraelectric phase transition in a ferroelectric of small size is studied within the framework of Landau phase transition theory. The transition is a consequence of the competition between the decrease of the volume free energy by polarization and the increase of the surface energy of the ferroelectric phase, which has a surface energy density higher than that in the paraelectric phase. A simple expression for the ferroelectric critical size as a function of the Landau free energy coefficients and the surface energy density is derived.
Key words ：
77.80.Bh
68.18.Jk
出版日期: 2003-07-01
引用本文:
ZHONG Wei-Lie;WANG Yuan-Xu;ZHANG Pei-Lin. Size Driven Ferroelectric-Paraelectric Phase Transition from the Surface Energy Viewpoint[J]. 中国物理快报, 2003, 20(7): 1134-1136.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2003/V20/I7/1134
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