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    Micro-Raman study of the microheterogeneity in the MA-MC phase transition in 0.67PbMg1/3Nb2/3O3-0.33PbTiO3 single crystal

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    Type
    Article
    Authors
    Yang, Yang
    Zhang, L. Y.
    Zhu, K.
    Liu, Y. L.
    KAUST Department
    Advanced Nanofabrication, Imaging and Characterization Core Lab
    Imaging and Characterization Core Lab
    Date
    2011-04-21
    Online Publication Date
    2011-04-21
    Print Publication Date
    2011-04-15
    Permanent link to this record
    http://hdl.handle.net/10754/552756
    
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    Abstract
    Polarized Raman spectroscopy has been employed to investigate the evolution of the microstructure of 0.67PbMg1/3Nb2/3O3-0.33PbTiO3 (PMN-33%PT) single crystal in the temperature range from −195 to 300 °C. The M A-M C-cubic transition sequence was observed in the microareas with M A-type (space group Cm) and M C-type (space group Pm) monoclinic structures. Interestingly, the M A-M Cphase transition temperature exhibited remarkable microareal dependence due to the spatial inhomogeneity of polar nanoregions (PNRs). The M C-cubic phase transition took place at 155 °C in both microareas, which consisted well with previous reports. These results reveal that the phase transition in PMN-33%PT single crystal is closely related with the thermal dynamics of PNRs, which will be useful for understanding the microheterogeneity in this compound.
    Citation
    Micro-Raman study of the microheterogeneity in the MA-MC phase transition in 0.67PbMg1/3Nb2/3O3-0.33PbTiO3 single crystal 2011, 109 (8):083517 Journal of Applied Physics
    Publisher
    AIP Publishing
    Journal
    Journal of Applied Physics
    DOI
    10.1063/1.3574666
    Additional Links
    http://scitation.aip.org/content/aip/journal/jap/109/8/10.1063/1.3574666
    ae974a485f413a2113503eed53cd6c53
    10.1063/1.3574666
    Scopus Count
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    Articles; Imaging and Characterization Core Lab

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