Zhong Qi
. 2014, 45(17-稀土): 8-0.
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Preparation and magnetoelectric characterization of Bi0.9Ho0.1Fe1-xMnxO3 ceramics
Zhong Qi, Zhang Ming, Deng Haoliang, Wei Jizhou, Hou Yudong, Zhu Mankang, Yan Hui
(College of Materials Science and Engineering,Beijing University of Technology,Beijing 100124,China)
Abstract: Multiferroic ceramics Bi0.9Ho0.1Fe1-xMnxO3 (x = 0.05, 0.10, 0.15) ceramics were prepared by solid state reaction method. X-ray diffraction (XRD) indicated that Bi0.9Ho0.1Fe1-xMnxO3 ceramics exit secondary phase Bi2Fe4O9. With increasing Mn4+ content, the gradual merging of the (104) and (110) peaks and the gradual disappearance of the (006) peak indicated a structural transition from the rhombohedral to the tetragonal were observed. SEM images indicated that the grain size increases with increasing Mn4+ ions dopant concentration. Ferroelectric performance testing were shown that that all samples present the typical loss unsaturated ferroelectric behavior, as the P-E loops were not saturated. The remnant polarization of Bi0.9Ho0.1Fe1-xMnxO3 (x = 0.05, 0.10, 0.15) ceramics increased and then decreased sharply. The M-H curves recorded at room temperature revealed that the remanent magnetization increased with increasing Mn4+ content. In other words, the unique M-H loops indicated that the Bi0.9Ho0.1Fe1-xMnxO3 ceramics have a metamagnetic transition with increasing magnetic filed.