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Browse Journals & Magazines > Applied Physics Letters ...> Volume:88 Issue:7 Help

Temperature-strain phase diagram for BaTiO3 thin films

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2 Author(s)
Li, Y.L. ; Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802 and MST-STC, MS K763, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 ; Chen, L.Q.

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The shifts of ferroelectric phase transition temperatures and domain stabilities of BaTiO3 thin films as a function of strain and temperature were studied using phase-field simulations. A new Landau-Devonshire thermodynamic potential based on an eighth-order polynomial was employed for describing the bulk free energy of BaTiO3 single crystals, which allows the exploration of domain stability in the full range of experimentally accessible compressive and tensile strains. Based on the simulation results, a phase diagram was constructed, which displays the stability of various ferroelectric phases and domain structures as a function of temperature and strain.

Published in:
Applied Physics Letters  (Volume:88 ,  Issue: 7 )

Date of Publication: Feb 2006

Page(s):
072905 - 072905-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.2172744
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Feb 2006

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