A modified Landau-Devonshire thermodynamic potential for strontium titanate

G. Sheng; Y. L. Li; J. X. Zhang; S. Choudhury; Q. X. Jia; V. Gopalan; D. G. Schlom; Z. K. Liu; L. Q. Chen

doi:10.1063/1.3442915

A modified Landau-Devonshire thermodynamic potential for strontium titanate

G. Sheng
, Y. L. Li
, J. X. Zhang
, S. Choudhury
, Q. X. Jia
, V. Gopalan
, D. G. Schlom
, Z. K. Liu
, L. Q. Chen

Department of Materials Design and Innovation

Pennsylvania State University
Pacific Northwest National Laboratory
Carpenter Technology Corporation
Cornell University

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

50 Scopus citations

Abstract

The range of reported values of the Landau energy coefficients of bulk SrTiO₃ leads to uncertainty in not only the magnitude but also the direction of the calculated spontaneous polarization in SrTiO₃ thin films in a state of biaxial tension. In this study, we use experimental results from strained SrTiO₃ films together with phase-field simulations to refine the values of the Landau energy coefficients and report a modified thermodynamic potential for bulk strontium titanate. The transition temperatures and ferroelectric/antiferrodistortive domain stabilities predicted from this modified potential agree well with measurements on biaxially strained SrTiO ₃ thin films.

Original language	English
Article number	232902
Journal	Applied Physics Letters
Volume	96
Issue number	23
DOIs	https://doi.org/10.1063/1.3442915
State	Published - 2010

Access to Document

10.1063/1.3442915

Cite this

@article{1114ffd9e70045c59eead5c2fb52c7e5,

title = "A modified Landau-Devonshire thermodynamic potential for strontium titanate",

abstract = "The range of reported values of the Landau energy coefficients of bulk SrTiO3 leads to uncertainty in not only the magnitude but also the direction of the calculated spontaneous polarization in SrTiO3 thin films in a state of biaxial tension. In this study, we use experimental results from strained SrTiO3 films together with phase-field simulations to refine the values of the Landau energy coefficients and report a modified thermodynamic potential for bulk strontium titanate. The transition temperatures and ferroelectric/antiferrodistortive domain stabilities predicted from this modified potential agree well with measurements on biaxially strained SrTiO 3 thin films.",

author = "G. Sheng and Li, \{Y. L.\} and Zhang, \{J. X.\} and S. Choudhury and Jia, \{Q. X.\} and V. Gopalan and Schlom, \{D. G.\} and Liu, \{Z. K.\} and Chen, \{L. Q.\}",

year = "2010",

doi = "10.1063/1.3442915",

language = "English",

volume = "96",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "23",

}

TY - JOUR

T1 - A modified Landau-Devonshire thermodynamic potential for strontium titanate

AU - Sheng, G.

AU - Li, Y. L.

AU - Zhang, J. X.

AU - Choudhury, S.

AU - Jia, Q. X.

AU - Gopalan, V.

AU - Schlom, D. G.

AU - Liu, Z. K.

AU - Chen, L. Q.

PY - 2010

Y1 - 2010

N2 - The range of reported values of the Landau energy coefficients of bulk SrTiO3 leads to uncertainty in not only the magnitude but also the direction of the calculated spontaneous polarization in SrTiO3 thin films in a state of biaxial tension. In this study, we use experimental results from strained SrTiO3 films together with phase-field simulations to refine the values of the Landau energy coefficients and report a modified thermodynamic potential for bulk strontium titanate. The transition temperatures and ferroelectric/antiferrodistortive domain stabilities predicted from this modified potential agree well with measurements on biaxially strained SrTiO 3 thin films.

AB - The range of reported values of the Landau energy coefficients of bulk SrTiO3 leads to uncertainty in not only the magnitude but also the direction of the calculated spontaneous polarization in SrTiO3 thin films in a state of biaxial tension. In this study, we use experimental results from strained SrTiO3 films together with phase-field simulations to refine the values of the Landau energy coefficients and report a modified thermodynamic potential for bulk strontium titanate. The transition temperatures and ferroelectric/antiferrodistortive domain stabilities predicted from this modified potential agree well with measurements on biaxially strained SrTiO 3 thin films.

UR - https://www.scopus.com/pages/publications/77953498538

U2 - 10.1063/1.3442915

DO - 10.1063/1.3442915

M3 - Article

AN - SCOPUS:77953498538

SN - 0003-6951

VL - 96

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 23

M1 - 232902

ER -

A modified Landau-Devonshire thermodynamic potential for strontium titanate

Abstract

Access to Document

Other files and links

Fingerprint

Cite this