期刊
PHYSICAL REVIEW APPLIED
卷 8, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevApplied.8.014033
关键词
-
资金
- EPSRC [EP/M020517/1]
- Army Research Office [W911NF-13-1-0486]
- Royal Society University Research Fellowship
- Engineering and Physical Sciences Research Council [EP/J003557/1, 1380754, EP/M020517/1] Funding Source: researchfish
- EPSRC [EP/M020517/1, EP/J003557/1] Funding Source: UKRI
We have directly imaged reversible electrical switching of the cycloidal rotation direction (magnetic polarity) in a (111)(pc)-BiFeO3 epitaxial-film device at room temperature by nonresonant x-ray magnetic scattering. Consistent with previous reports, fully relaxed (111)(pc)-BiFeO3 epitaxial films consisting of a single ferroelectric domain are found to comprise a submicron-scale mosaic of magnetoelastic domains, all sharing a common direction of the magnetic polarity, which is found to switch reversibly upon reversal of the ferroelectric polarization without any measurable change of the magnetoelastic domain population. A real-space polarimetry map of our device clearly distinguishes between regions of the sample electrically addressed into the two magnetic states with a resolution of a few tens of micron. Contrary to the general belief that the magneto-electric coupling in BiFeO3 is weak, we find that electrical switching has a dramatic effect on the magnetic structure, with the magnetic moments rotating on average by 90 degrees at every cycle.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据