| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Dielectric Characteristics in BiFeO3-Modified SrTiO3 Incipient Ferroelectric Ceramics |
| LIU Juan QIN Ying, LIU Xiao-Qiang, CHEN Xiang-Ming** |
Laboratory of Dielectric Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027
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| Cite this article: |
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LIU Juan QIN Ying, LIU Xiao-Qiang, CHEN Xiang-Ming 2015 Chin. Phys. Lett. 32 025201 |
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Abstract We investigate the dielectric and ferroelectric properties of Sr1?xBixTi1?xFexO3 solid solutions (x=0, 0.05, 0.1, 0.15 and 0.2) together with their structures. Through the analysis of Rietveld refinement of powder x-ray diffraction, a cubic structure in space group Pm3m is determined for all the compositions. An obvious dielectric relaxation peak differing from SrTiO3 is observed in the present ceramics. The peak temperature Tm increases with increasing x, and it approaches room temperature at x=0.2. The Vogel–Fulcher law and Curie–Weiss law fittings further confirm the relaxor ferroelectricity in the present ceramics.
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Published: 20 January 2015
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