Phase transitions in ultra-thin ferroelectric films and fine period multilayers
Phase transitions in ultra-thin ferroelectric films and fine period multilayers
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DOI：
10.1080/01411590802048315
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发表时间：
2008-01-01
影响因子：
1.6
通讯作者：
Triscone, Jean-Marc
中科院分区：
文献类型：
--
作者：
Dawber, Matthew;Lichtensteiger, Celine;Triscone, Jean-Marc
铁电材料中的相变行为强烈地依赖于边界条件，包括电的和机械的。在这篇文章中，我们涉及几个主题。从薄膜开始，我们看看抑制铁电性薄膜厚度减少，涵盖两种情况，第一种情况下，极化降低，最终被抑制，第二个系统形成域，以维持铁电性。然后，重点转移到超晶格，强调静电耦合主导超晶格行为的方式，但揭示了非常薄的层界面效应可以通过这种静电耦合产生新的宏观铁电行为。
Phase transition behaviour in ferroelectric materials is strongly dependent on boundary conditions, both electrical and mechanical. In this article, we cover several topics. Beginning with thin films, we look at the suppression of ferroelectricity as film thickness is reduced, covering two situations, the first in which the polarisation decreases and eventually is suppressed, and the second where the system forms domains in order to sustain ferroelectricity. The focus then moves to superlattices, highlighting the way that electrostatic coupling dominates the behaviour of superlattices, but revealing that for very thin layers interfacial effects can communicate through this electrostatic coupling to produce new kinds of macroscopic ferroelectric behaviour.