Magnetic-ion-induced displacive electric polarization in FeO5 bipyramidal units of (Ba,Sr)Fe12O19 hexaferrites
文献类型：期刊论文
| 作者 | Shen, SP ; Chai, YS ; Cong, JZ ; Sun, PJ ; Lu, J ; Yan, LQ ; Wang, SG ; Sun, Y |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2014 |
| 卷号 | 90期号:18 |
| ISSN号 | 1098-0121 |
| 通讯作者 | Shen, SP (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | Electric polarization in conventional paraelectric/ferroelectric oxides usually involves the displacement of nonmagnetic transition-metal ions with an empty d shell. Here we unravel an unusual mechanism for electric polarization based on the displacement of magnetic Fe3+ (3d(5)) ions. Our simulations suggest that the competition between the long-range Coulomb interaction and short-range Pauli repulsion in a FeO5 bipyramidal unit with proper lattice parameters would favor an off-center displacement of Fe3+, which directly induces a local electric dipole. As a prototype example, we show that the electric dipole of a FeO5 bipyramid in (Ba,Sr)Fe12O19 hexaferrites leads to a different family of magnetic quantum paraelectrics. The manipulation of this unique magnetic-ion-induced displacive electric polarization in a FeO5 bipyramid could open up a promising route to generating unconventional dielectrics, ferroelectrics, and multiferroics. |
| 资助信息 | Natural Science Foundation of China [11227405, 11374347]; National Key Basic Research Program of China [2011CB921801]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB07030200] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59497]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Shen, SP,Chai, YS,Cong, JZ,et al. Magnetic-ion-induced displacive electric polarization in FeO5 bipyramidal units of (Ba,Sr)Fe12O19 hexaferrites[J]. PHYSICAL REVIEW B,2014,90(18). |
| APA | Shen, SP.,Chai, YS.,Cong, JZ.,Sun, PJ.,Lu, J.,...&Sun, Y.(2014).Magnetic-ion-induced displacive electric polarization in FeO5 bipyramidal units of (Ba,Sr)Fe12O19 hexaferrites.PHYSICAL REVIEW B,90(18). |
| MLA | Shen, SP,et al."Magnetic-ion-induced displacive electric polarization in FeO5 bipyramidal units of (Ba,Sr)Fe12O19 hexaferrites".PHYSICAL REVIEW B 90.18(2014). |
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来源：物理研究所
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