期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 93, 期 8, 页码 2113-2116出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1551-2916.2010.03661.x
关键词
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资金
- Singapore Millennium Foundation
- National University of Singapore
- Science and Engineering Research Council (A*Star, Singapore)
Bilayered thin films consisting of (Bi0.90La0.10)FeO3 and Bi(Fe0.95Mn0.05)O-3, i.e., Bi(Fe0.95Mn0.05)O-3/(Bi0.90La0.10)FeO3, were deposited on SrRuO3 buffered SrTiO3(111) substrates by off-axis radio frequency magnetic sputtering, where (111)-oriented bilayered thin films were obtained. The bilayered Bi(Fe0.95Mn0.05)O-3/(Bi0.90La0.10)FeO3 thin film possesses a lower coercive field (2E(c)similar to 335.6 kV/cm) and a larger remanent polarization (2P(r)similar to 155.2 mu C/cm2) at room temperature, and a higher relative permittivity as compared with those of single-layer (Bi0.90La0.10)FeO3 and Bi(Fe0.95Mn0.05)O-3 thin films, together with an improvement of the magnetic properties (2M(s)similar to 31.2 emu/cm3). The bottom (Bi0.90La0.10)FeO3 nanolayer promotes the growth of the Bi(Fe0.95Mn0.05)O-3 layer, which are largely responsible for the multiferroic behavior observed.
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