Colossal magnetocapacitance effect in BiFeO3/La5/8Ca3/8MnO3 epitaxial films |
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| Authors: | Yukuai LiuYiping Yao Sining DongTao Jiang Shengwei YangXiaoguang Li |
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| Affiliation: | Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei 230026, PR China |
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| Abstract: | A colossal magnetocapacitance in magnetic fields was observed near the Curie temperature Tc = 220 K of La5/8Ca3/8MnO3 for the BiFeO3/La5/8Ca3/8MnO3 epitaxial film. It was found that the magnetocapacitance increases with increasing magnetic fields and reaches a maximum up to 1100% enhancement around Tc at 10 T. From the analysis of the dielectric relaxation, one can see that the behavior of relaxation time τ above Tc differs from that below Tc, and the value of τ decreases with increasing magnetic fields. This colossal magnetocapacitance effect near room temperature in BiFeO3/La5/8Ca3/8MnO3 may have potential applications in multifunctional microelectronic device. |
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| Keywords: | BiFeO3/La5/8Ca3/8MnO3 epitaxial films Multiferroic Magnetoelectric coupling Magnetocapacitance effect Dielectric relaxation |
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