Antiferroelectricity in multiferroic BiCrO3 epitaxial films
作者： Dae Ho Kim , Ho Nyung Lee , Maria Varela , Hans M. Christen
DOI: 10.1063/1.2362585
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摘要: Multiferroic BiCrO3 epitaxial films were grown by pulsed laser deposition on SrTiO3 (001) substrates with SrRuO3 bottom electrodes. The authors found that the exhibit antiferroelectricity a characteristic electric field induced ferroelectric phase, as evidenced double hysteretic behaviors in dependence of dielectric constants and polarization. is consistent theoretical predictions Bi lone pair induces polarization bismuth-based perovskites, such BiMnO3 BiFeO3. Magnetic measurements revealed weak parasitic ferromagnetism resulting from antiferromagnetic ordering below 140K. This magnetic transition coincides local maximum constants’ temperature dependence.
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