Journal
THIN SOLID FILMS
Volume 585, Issue -, Pages 82-85Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2015.02.021
Keywords
BiFeO3-PbTiO3 solid solution; Thin films; Multiferroic properties; Sol-gel method
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Funding
- U.S. Office of Naval Research (ONR) [N00014-12-1-1045]
- Natural Science and Engineering Research Council of Canada (NSERC) [203773]
- Natural Science Foundation of China [50728201, 90923001]
- International Science &Technology Cooperation Program of China [2011DFA51880]
- 111 Project of China [B14040]
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Multiferroic 0.7BiFeO(3)-0.3PbTiO(3) (BFO-PT) thin films have been prepared by a sol-gel method on Pt/Ti/SiO2/Si substrates. A strong dielectric dispersion was observed above 10 kHz and a relatively low dielectric loss was found at low frequencies. The BFO-PT thin films exhibit both ferroelectricity and (week) ferromagnetism with P-r = 13.7 mu C/cm(2) and M-S = 3200 A/m at room temperature, confirming the multiferroic properties. The local polar domain structure and ferroelectric switching of the thin films were investigated by piezoresponse force microscopy. (C) 2015 Elsevier B.V. All rights reserved.
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