Journal of Advanced Dielectrics, Volume. 13, Issue 3, 2243002(2023)

Ferroelastic and 90 ferroelectric domains in Bi2WO6 single crystals

Xianghan Xu*, Fei-Ting Huang*, and Sang-Wook Cheong*
Author Affiliations
  • Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854, USA
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    High-quality single crystals of Bi2WO6 are grown using a flux method. With different flux growth recipes, we aim to control the crystallization temperature to be lower and higher than the ferroelectric transition temperature, resulting in mono-domain and multi-domain Bi2WO6 crystals, respectively. Abundant ferroelastic orthorhombic twin domains are observed in the multi-domain crystals under an optical microscope. PFM studies unveil the 90 polarization change across those ferroelastic domain walls, as well as the absence of 180 ferroelectric domains in the as-grown multi-domain crystals, indicating a high energy cost of 180 ferroelectric domains. Moreover, a 45 tilt of the 90 ferroelectric domain walls is discovered, and this tilt creates a new type of charged 90 ferroelectric walls, which have not been observed in other bulk ferroelectrics.


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    Xianghan Xu, Fei-Ting Huang, Sang-Wook Cheong. Ferroelastic and 90 ferroelectric domains in Bi2WO6 single crystals[J]. Journal of Advanced Dielectrics, 2023, 13(3): 2243002

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    Paper Information

    Category: Research Articles

    Received: Oct. 13, 2022

    Accepted: Dec. 18, 2022

    Published Online: Jul. 18, 2023

    The Author Email: Xu Xianghan (, Huang Fei-Ting (, Cheong Sang-Wook (