Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.3186038
Title: Vortex structure transformation of BaTiO3 nanoparticles through the gradient function
Authors: Hong, L.
Soh, A.K.
Liu, S.Y.
Lu, L. 
Issue Date: 2009
Source: Hong, L., Soh, A.K., Liu, S.Y., Lu, L. (2009). Vortex structure transformation of BaTiO3 nanoparticles through the gradient function. Journal of Applied Physics 106 (2) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3186038
Abstract: Phase field method has been used to simulate the vortex structures in BaTiO3 (BTO) nanoparticles. Through the modulation of the gradient coefficients, vortices are found to transform in a path of monoclinic M A →orthorhombic→monoclinic MC →tetragonal. Although the gradient coefficients vary significantly, the change in gradient energy is remarkably small. The simulation results show that the rotation and magnitude reduction in polarization dipoles increase the bulk energy, which induces the vortex transformation process in BTO nanoparticles. Moreover, the existence of monoclinic phase is a necessity to start the polarization rotation as well as the vortex transformation process. © 2009 American Institute of Physics.
Source Title: Journal of Applied Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/85833
ISSN: 00218979
DOI: 10.1063/1.3186038
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