Characterization and Manipulation of Mixed Phase Nanodomains in Highly Strained BiFeO3 Thin Films
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- 作者：Lu You ; Zuhuang Chen ; Xi Zou ; Hui Ding ; Weigang Chen ; Lang Chen ; Guoliang Yuan ; Junling Wang
- 刊名：ACS Nano
- 出版年：2012
- 出版时间：June 26, 2012
- 年：2012
- 卷：6
- 期：6
- 页码：5388-5394
- 全文大小：495K
- 年卷期：v.6,no.6(June 26, 2012)
- ISSN：1936-086X
文摘
The novel strain-driven morphotropic phase boundary (MPB) in highly strained BiFeO3 thin films is characterized by well-ordered mixed phase nanodomains (MPNs). Through scanning probe microscopy and synchrotron X-ray diffraction, eight structural variants of the MPNs are identified. Detailed polarization configurations within the MPNs are resolved using angular-dependent piezoelectric force microscopy. Guided by the obtained results, deterministic manipulation of the MPNs has been demonstrated by controlling the motion of the local probe. These findings are important for an in-depth understanding of the ultrahigh electromechanical response arising from phase transformation between competing phases, enabling future explorations on the electronic structure, magnetoelectricity, and other functionalities in this new MPB system.