Collective Dipole Behavior and Unusual Morphotropic Phase Boundary in Ferroelectric Pb(Zr0.5Ti0.5)O3 Nanowires

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• 作者：Xiujun Fu ; Ivan I. Naumov ; Huaxiang Fu
• 刊名：Nano Letters
• 出版年：2013
• 出版时间：February 13, 2013
• 年：2013
• 卷：13
• 期：2
• 页码：491-496
• 全文大小：280K
• 年卷期：v.13,no.2(February 13, 2013)
• ISSN：1530-6992

文摘

Dipole collective behavior and phase transition in ferroelectric (FE) Pb(Zr_0.5Ti_0.5)O₃ nanowires, caused by modulated electric fields, are reported. Our result also leads to the finding of a rather outstanding electromechanical d₃₁ response in a 8.4 nm diameter PZT wire, which may potentially outperform bulk PMN鈥揚T and PZN鈥揚T. Moreover, we further demonstrate the existence of a new type of morphotropic phase boundary (MPB) that bridges two dissimilar structure phases of different order parameters. Microscopic insights for understanding the collective behavior and the structural phase within the new MPB are provided.

Keywords:

Ferroelectric nanowire; phase transition; morphotropic phase boundary; collective behavior; electromechanical response