Journal
JOURNAL OF APPLIED PHYSICS
Volume 109, Issue 12, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3596814
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Funding
- National Natural Science Foundation of China [50702048, 10802072, 11072208, 11032010, 10732100]
- Hunan Provincial Natural Science Foundation of China [09JJ1006, 09JJ7004]
- Program for New Century Excellent Talents in University [NCET-08-0687]
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The effects of misfit strain on the electrocaloric (EC) properties of BaTiO3 thin films arestudied by using the Landau-Devonshire thermodynamic theory. The misfit-strain temperature phase diagrams for different electric fields are constructed. It was found that the EC effect of a BaTiO3 thin film is strongly dependent on misfit strain. More interestingly, we found that BaTiO3 thin films with tensile misfit strain exhibit a sizable EC effect in a wider temperature range in comparison with those with compressive misfit strain. (C) 2011 American Institute of Physics. [doi:10.1063/1.3596814]
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