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    Ferroelectric Polarization Switching Dynamics and Domain Growth of Triglycine Sulfate and Imidazolium Perchlorate

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    Type
    Article
    Authors
    Ma, He
    Gao, Wenxiu
    Wang, Junling
    Wu, Tao cc
    Yuan, Guoliang
    Liu, Junming
    Liu, Zhiguo
    KAUST Department
    Laboratory of Nano Oxides for Sustainable Energy
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2016-04-08
    Online Publication Date
    2016-04-08
    Print Publication Date
    2016-06
    Permanent link to this record
    http://hdl.handle.net/10754/621546
    
    Metadata
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    Abstract
    The weak bond energy and large anisotropic domain wall energy induce many special characteristics of the domain nucleation, growth, and polarization switch in triglycine sulfate (TGS) and imidazolium perchlorate (IM), two typical molecular ferroelectrics. Their domain nucleation and polarization switch are rather slower than those of conventional oxide ferroelectrics, which may be due to the weaker bond energy of hydrogen bond or van der Waals bond than that of ionic bond. These chemical bonds dominate the elastic energy, with the latter being an important component of domain wall energy and playing an important role in domain nucleation and domain growth. The ratio of anisotropic domain wall energy to Gibbs free energy is large in TGS and IM, which allows a favorable domain shape and a special domain evolution under a certain electric field. Therefore, this study not only sheds light on the physical nature but also indicates the application direction for molecular ferroelectrics. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
    Citation
    Ma H, Gao W, Wang J, Wu T, Yuan G, et al. (2016) Ferroelectric Polarization Switching Dynamics and Domain Growth of Triglycine Sulfate and Imidazolium Perchlorate. Advanced Electronic Materials 2: 1600038. Available: http://dx.doi.org/10.1002/aelm.201600038.
    Sponsors
    The work is supported by the National Natural Science Foundation of China (11134004, 11234005, and 51472118), and a Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions. J. W. acknowledges support from National Research Foundation of Singapore under project NRF-CRP5-2009-04. The authors also thank Prof. Ren-Gen Xiong from Southeast University, Nanjing, China for providing all ferroelectric crystals.
    Publisher
    Wiley
    Journal
    Advanced Electronic Materials
    DOI
    10.1002/aelm.201600038
    ae974a485f413a2113503eed53cd6c53
    10.1002/aelm.201600038
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

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