Origin of ferromagnetism and oxygen-vacancy ordering induced cross-controlled magnetoelectric effects at room temperature
文献类型：期刊论文
| 作者 | Wei, XK ; Zou, T ; Wang, F ; Zhang, QH ; Sun, Y ; Gu, L ; Hirata, A ; Chen, MW ; Yao, Y ; Jin, CQ ; Yu, RC |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 2012 |
| 卷号 | 111期号:7 |
| 关键词 | FE-DOPED BATIO3 MAGNETIC-PROPERTIES ELECTRICAL-PROPERTIES CRYSTAL-STRUCTURE MANGANITES TRANSITION CERAMICS FERROELECTRICITY PHYSICS OXIDES |
| ISSN号 | 0021-8979 |
| 通讯作者 | Yu, RC (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | In dilute magnetic oxide hexagonal Ba(Ti0.9Fe0.1)O-2.81 bulk ceramic, we report on combined ferromagnetism and improper ferroelectricity as well as cross-controlled magnetoelectric effects at room temperature. The annular-bright-field (ABF) imaging technique in scanning transmission electron microscopy (STEM) demonstrates an oxygen vacancy ordering in the hexagonal closest-packed Ba1-O1 layers and severe distortion of the octahedra and pyramids. Strong dependencies of the susceptibility on temperature and magnetic field as well as the frequency dependence of magnetization under an ac electric field reveal that the intrinsic ferromagnetism of the highly insulating system dynamically evolves from a paramagnetic ground state, and dynamic exchanges of trapped electrons in the ordered polarons are attributed to the ferromagnetic interaction. Accordingly, aided by the motion of oxygen vacancies, responses of the trapped electrons to the ac magnetic field result in the reversal of magnetically induced voltages between high and low states. Our results not only expand our understanding on the magnetoelectric coupling mechanism, but also provide a grand opportunity toward designing novel multiferroic materials through introducing ordered point defects into a centrosymmetric matrix. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3696979] |
| 收录类别 | SCI |
| 资助信息 | State Key Development Program for Basic Research of China [2012CB932302]; National Natural Science Foundation of China [11174336, 50921091]; Beijing Municipal Commission of Education; Chinese Academy of Sciences |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/50472]  |
| 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 | Wei, XK,Zou, T,Wang, F,et al. Origin of ferromagnetism and oxygen-vacancy ordering induced cross-controlled magnetoelectric effects at room temperature[J]. JOURNAL OF APPLIED PHYSICS,2012,111(7). |
| APA | Wei, XK.,Zou, T.,Wang, F.,Zhang, QH.,Sun, Y.,...&Yu, RC.(2012).Origin of ferromagnetism and oxygen-vacancy ordering induced cross-controlled magnetoelectric effects at room temperature.JOURNAL OF APPLIED PHYSICS,111(7). |
| MLA | Wei, XK,et al."Origin of ferromagnetism and oxygen-vacancy ordering induced cross-controlled magnetoelectric effects at room temperature".JOURNAL OF APPLIED PHYSICS 111.7(2012). |
入库方式： OAI收割
来源：物理研究所
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