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Reversible Wurtzite–Tetragonal Reconstruction in ZnO(10equation image0) Surfaces

Authors

  • Dr. Mo-Rigen He,

    1. Beijing National Center for Electron Microscopy, Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China)
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  • Prof. Rong Yu,

    1. Beijing National Center for Electron Microscopy, Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China)
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  • Prof. Jing Zhu

    Corresponding author
    1. Beijing National Center for Electron Microscopy, Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China)
    • Beijing National Center for Electron Microscopy, Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China)
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  • This work was supported by the National 973 Project of China (grant numbers 2009CB623700 and 2011CB606403), the National Natural Science Foundation of China (grant numbers 50831001 and 51071092), and the Innovation Method Program (grant number 2010IM031300). This work made use of the resources of Beijing National Center for Electron Microscopy.

Abstract

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Bistable surface: The reversible phase transition between wurtzite (WZ) and body-centered-tetragonal (BCT) lattice was activated in ZnO(10equation image0) surfaces and directly imaged at atomic scale by using aberration-corrected electron microscopy (see picture). A nucleation-growth mechanism for the surface reconstruction is further proposed based on observations and calculations of the WZ–BCT domain boundary.

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