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

doi:10.1063/1.2975161

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 journal › Article › peer-review

8 Scopus citations

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 language	English (US)
Article number	132908
Journal	Applied Physics Letters
Volume	93
Issue number	13
DOIs	https://doi.org/10.1063/1.2975161
State	Published - 2008

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2975161

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

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.",

author = "Liu, {Ping Li} and Jie Wang and Zhang, {Tong Yi} and Yulan Li and Chen, {Long Qing} and Ma, {Xing Qiao} and Chu, {Wu Yang} and Qiao, {Li Jie}",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China under Grant Nos. 50572006, 50632010, 50571011, and 50428101, the HKUST Fok Ying Tung Graduate School under Project No. NRC06/07.EG04, and (U.S.) Department of Energy under Grant No. DE-FG02-07ER46417. ",

year = "2008",

doi = "10.1063/1.2975161",

language = "English (US)",

volume = "93",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "13",

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TY - JOUR

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

T2 - Phase field simulations

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

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China under Grant Nos. 50572006, 50632010, 50571011, and 50428101, the HKUST Fok Ying Tung Graduate School under Project No. NRC06/07.EG04, and (U.S.) Department of Energy under Grant No. DE-FG02-07ER46417.

PY - 2008

Y1 - 2008

N2 - 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.

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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DO - 10.1063/1.2975161

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VL - 93

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 13

M1 - 132908

ER -

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

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