Effects of unequally biaxial misfit strains on polarization phase diagrams in embedded ferroelectric thin layers: Phase field simulations

Ping Li Liu, Jie Wang, Tong Yi Zhang, Yulan Li, Long Qing Chen, Xing Qiao Ma, Wu Yang Chu, Li Jie Qiao

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Phase field simulations were conducted to investigate the effects of unequally biaxial misfit strains on domain stability diagrams and equilibrium domain structures in an epitaxial ferroelectric PbTiO3 thin layer, which is sandwiched in a nonferroelectric medium. The simulations reveal a multidomain structure in the layer and allow constructing "misfit strain-misfit strain" and "temperature-misfit strain" phase diagrams. It is found that unequally biaxial misfit strains may lead to the presence of a single tetragonal variant, either a -domains or b -domains, which do not exist if the misfit strains are equally biaxial.

Original languageEnglish (US)
Article number132908
JournalApplied Physics Letters
Volume93
Issue number13
DOIs
StatePublished - Oct 13 2008

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phase diagrams
polarization
simulation
diagrams
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Liu, Ping Li ; Wang, Jie ; Zhang, Tong Yi ; Li, Yulan ; Chen, Long Qing ; Ma, Xing Qiao ; Chu, Wu Yang ; Qiao, Li Jie. / Effects of unequally biaxial misfit strains on polarization phase diagrams in embedded ferroelectric thin layers : Phase field simulations. In: Applied Physics Letters. 2008 ; Vol. 93, No. 13.
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Effects of unequally biaxial misfit strains on polarization phase diagrams in embedded ferroelectric thin layers : Phase field simulations. / Liu, Ping Li; Wang, Jie; Zhang, Tong Yi; Li, Yulan; Chen, Long Qing; Ma, Xing Qiao; Chu, Wu Yang; Qiao, Li Jie.

In: Applied Physics Letters, Vol. 93, No. 13, 132908, 13.10.2008.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effects of unequally biaxial misfit strains on polarization phase diagrams in embedded ferroelectric thin layers

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AU - Liu, Ping Li

AU - Wang, Jie

AU - Zhang, Tong Yi

AU - Li, Yulan

AU - Chen, Long Qing

AU - Ma, Xing Qiao

AU - Chu, Wu Yang

AU - Qiao, Li Jie

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AB - Phase field simulations were conducted to investigate the effects of unequally biaxial misfit strains on domain stability diagrams and equilibrium domain structures in an epitaxial ferroelectric PbTiO3 thin layer, which is sandwiched in a nonferroelectric medium. The simulations reveal a multidomain structure in the layer and allow constructing "misfit strain-misfit strain" and "temperature-misfit strain" phase diagrams. It is found that unequally biaxial misfit strains may lead to the presence of a single tetragonal variant, either a -domains or b -domains, which do not exist if the misfit strains are equally biaxial.

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