Suppressed polar distortion with enhanced Curie temperature in in-plane 90 degrees-domain structure of a-axis oriented PbTiO3 Film

PbTiO3 thin films were epitaxially grown on (001) KTaO3 single crystal substrates by metalorganic chemical vapor deposition. The coherent epitaxial growth introduced a large in-plane tensile strain to the PbTiO3 film. This tensile strain increased T-C and directed the polarization to one of the in-plane < 100 > axes below T-C, resulting in the formation of perfect a(1)/a(2)/a(1)/a(2) domain structure. We found that the polar distortion is appreciably suppressed in such a(1)/a(2)/a(1)/a(2) domain structure while T-C is enhanced due to the strain. (C) 2015 AIP Publishing LLC.


Published in:
Applied Physics Letters, 106, 4
Year:
2015
Publisher:
Melville, Amer Inst Physics
ISSN:
0003-6951
Laboratories:




 Record created 2015-05-29, last modified 2018-03-17


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