Surface and size effects on phase diagrams of ferroelectric nanocylinders

Surface and size effects on phase diagrams of ferroelectric nanocylinders
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铁电纳米圆柱体相图的表面和尺寸效应

DOI:
10.1063/1.3624829
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发表时间:
2011-08
影响因子:
4
通讯作者:
Wang, Biao
Wang, Biao
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zheng, Yue;Lin, S. P;Wang, Biao

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研究了铁电纳米圆柱体的尺寸-温度相图。考虑到去极化场、表面和尺寸效应的存在,建立了修正热力学模型的八阶多项式。我们的结果表明,相图随着长度和半径的比率而明显变化,并且特别可以通过机械载荷来调整。
Size-temperature phase diagrams of ferroelectric nanocylinder have been investigated. Taking into account existence of the depolarization field, surface and size effects, an eighth-order polynomial of the modified thermodynamic model has been established. Our results show that the phase diagrams obviously vary with ratio of the length and radius, and can be adjusted by the mechanical loads especially.
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