An optimization-based "phase field" model for polycrystalline ferroelectrics

F. X. Li; X. L. Zhou; A. K. Soh

doi:10.1063/1.3377899

An optimization-based "phase field" model for polycrystalline ferroelectrics

F. X. Li, X. L. Zhou, A. K. Soh

Research output: Contribution to journal › Article › Research › peer-review

12 Citations (Scopus)

Abstract

An optimization-based computational model is proposed to study domain evolution in polycrystalline ferroelectrics composed of numerous grains, each of which consists of multiple domains. Domain switching is realized by an optimization process to minimize the free energy of each grain. Similar to phase field modeling, no priori domain-switching criterion is imposed in the proposed model. Moreover, by focusing on the volume fractions of domains only, the computational complexity of this model becomes much smaller and the domain textures evolution can be captured. Simulation results on both tetragonal and rhombohedral lead titanate zirconate ceramics illustrate the efficiency of this model.

Original language	English
Article number	152905
Journal	Applied Physics Letters
Volume	96
Issue number	15
DOIs	https://doi.org/10.1063/1.3377899
Publication status	Published - 12 Apr 2010
Externally published	Yes

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abstract = "An optimization-based computational model is proposed to study domain evolution in polycrystalline ferroelectrics composed of numerous grains, each of which consists of multiple domains. Domain switching is realized by an optimization process to minimize the free energy of each grain. Similar to phase field modeling, no priori domain-switching criterion is imposed in the proposed model. Moreover, by focusing on the volume fractions of domains only, the computational complexity of this model becomes much smaller and the domain textures evolution can be captured. Simulation results on both tetragonal and rhombohedral lead titanate zirconate ceramics illustrate the efficiency of this model.",

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note = "Funding Information: F.L. gratefully thanks Professor X. Guo (Dalian University of Technology) for his helpful discussions. This work is supported by the Natural Science Foundation (Grant No. 10872002), the 985 Project Foundation of Peking University, and the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. HKU 716007E).",

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An optimization-based "phase field" model for polycrystalline ferroelectrics

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