標題: | The preparation, and structural and multiferroic properties of B-site ordered double-perovskite Bi2FeMnO6 |
作者: | Sun, Lin Fang, Yue-Wen He, Jun Zhang, Yuanyuan Qi, Ruijuan He, Qing Huang, Rong Xiang, Pinghua Tang, Xiao-Dong Yang, Pingxiong Chu, Junhao Chu, Ying-Hao Duan, Chun-Gang 材料科學與工程學系 Department of Materials Science and Engineering |
公開日期: | 14-六月-2017 |
摘要: | We report the structural, magnetic, and ferroelectric properties of double-perovskite Bi2FeMnO6 in which Fe3+ and Mn3+ cations are present with alternative ordering along the [111] direction. High-flux synchrotron X-ray diffraction and high resolution transmission electron microscopy show that the pseudo-cubic lattice of Bi2FeMnO6 consists of alternatively corner-shared octahedra of FeO6 and MnO6. In the highly ordered Bi2FeMnO6 thin films, the unusual spin-glassy magnetic state is observed below 18 K by a superconducting quantum interference device, and this is ascribed to the magnetic frustration at the [111] Fe3+ and Mn3+ planes as indicated by X-ray magnetic circular dichroism measurements. Combining with the orbital model analysis based on Goodenough-Kanamori-Anderson rules, first-principles calculations and Monte Carlo simulations suggest that magnetic frustration is dominated by the long-range second nearest neighboring antiferromagnetic interactions of Fe3+-Fe3+ and Mn3+-Mn3+ and leads to the surprisingly weak magnetism. On the other hand, robust room-temperature ferroelectricity in Bi2FeMnO6 films is confirmed by piezoelectric force microscopy through electrically switching the polarization state and the ferroelectric retention. |
URI: | http://dx.doi.org/10.1039/c7tc00974g http://hdl.handle.net/11536/145631 |
ISSN: | 2050-7526 |
DOI: | 10.1039/c7tc00974g |
期刊: | JOURNAL OF MATERIALS CHEMISTRY C |
Volume: | 5 |
起始頁: | 5494 |
結束頁: | 5500 |
顯示於類別: | 期刊論文 |