| Title | Identification and mechanical control of ferroelastic domain structure in rhombohedral CaMn7O12 |
| Authors | Yuan, Renliang Duan, Lian Du, Xinyu Li, Yuan |
| Affiliation | Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China. Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China. |
| Keywords | WALLS CRYSTALS SPECTROSCOPY FERRITE FILMS |
| Issue Date | 2015 |
| Publisher | physical review b |
| Citation | PHYSICAL REVIEW B.2015,91,(5). |
| Abstract | We report on observation of ferroelastic domain structure in single crystals of multiferroic CaMn7O12 at room temperature. Two types of ferroelastic domain wall are found, consistent with the material's rhombohedral symmetry that is reduced from cubic symmetry at higher temperatures. Using Raman spectroscopy along with othermeasurements, we develop a systematic method to determine the microscopic domain orientation. Moreover, we find a switching behavior of the domains, which allows us to detwin the crystals conveniently at room temperature using a moderate uniaxial compression. Our result paves the way for further spectroscopic study and domain engineering in CaMn7O12. |
| URI | http://hdl.handle.net/20.500.11897/295890 |
| ISSN | 1098-0121 |
| DOI | 10.1103/PhysRevB.91.054102 |
| Indexed | SCI(E) |
| Appears in Collections: | 物理学院 |
