2023年9月27日,《物理评论快报》(Physical Review Letters)在线刊发了华中科技大学物理学院陆成亮教授课题组题为“Colossal linear magnetoelectricity in polar magnet Fe_(2)Mo_(3)O_(8)”的研究成果。该成果是依托国家脉冲强磁场...2023年9月27日,《物理评论快报》(Physical Review Letters)在线刊发了华中科技大学物理学院陆成亮教授课题组题为“Colossal linear magnetoelectricity in polar magnet Fe_(2)Mo_(3)O_(8)”的研究成果。该成果是依托国家脉冲强磁场科学中心实验测试平台,由陆成亮教授,中心王俊峰研究员、李亮教授,南京大学刘俊明教授及东南大学董帅教授带领的联合研究团队取得的最新研究进展。华中科技大学物理学院博士生常钰婷、南京邮电大学翁亚奎、湖北师范大学谢云龙为论文共同第一作者,陆成亮教授和董帅教授为论文共同通讯作者。展开更多
The low temperature specific heat of Sm-AI-Co ternary metallic glasses is investigated and a clear anomaly associated with the Boson peak is identified. While this anomaly depends slightly on the chemical composition,...The low temperature specific heat of Sm-AI-Co ternary metallic glasses is investigated and a clear anomaly associated with the Boson peak is identified. While this anomaly depends slightly on the chemical composition, it has no dependence on external magnetic field. To figure out the mechanism of the Boson peak, we interpret the data within various model frameworks. Unlike earlier work, our study shows that this Boson peak is mainly ascribed to an additional T2 term of the specific heat, which may originate from the quasi-two-dimensional and short-range ordered structure units possibly existing in the metallic glasses.展开更多
Highly compressively strained BiFeO3 thin films with different thickness are epitaxially grown on （001） LaA103 substrates and characterized using various techniques. The quasi-tetragonal phase with a giant axial rat...Highly compressively strained BiFeO3 thin films with different thickness are epitaxially grown on （001） LaA103 substrates and characterized using various techniques. The quasi-tetragonal phase with a giant axial ratio of -1.25 and its thickness-dependent evolution are investigated. An inter- esting twining structure of the quasi-tetragonal phase is evidenced in thicker films through detailed reciprocal space mapping, which becomes more pronounced with increasing film thickness. More- over, an interesting electric-field driven phase transition was evidenced in the film with a thickness of 38 nm, in which the quasi-tetragonal and rhombohedral phases are close to each other in energy landscape.展开更多
文摘2023年9月27日,《物理评论快报》(Physical Review Letters)在线刊发了华中科技大学物理学院陆成亮教授课题组题为“Colossal linear magnetoelectricity in polar magnet Fe_(2)Mo_(3)O_(8)”的研究成果。该成果是依托国家脉冲强磁场科学中心实验测试平台,由陆成亮教授,中心王俊峰研究员、李亮教授,南京大学刘俊明教授及东南大学董帅教授带领的联合研究团队取得的最新研究进展。华中科技大学物理学院博士生常钰婷、南京邮电大学翁亚奎、湖北师范大学谢云龙为论文共同第一作者,陆成亮教授和董帅教授为论文共同通讯作者。
基金Project supported by the National Natural Science Foundation of China (Grant Nos. 50601013, 10674061 and 50832002)the National Basic Research Program of China (Grant No. 2006CB921802)
文摘The low temperature specific heat of Sm-AI-Co ternary metallic glasses is investigated and a clear anomaly associated with the Boson peak is identified. While this anomaly depends slightly on the chemical composition, it has no dependence on external magnetic field. To figure out the mechanism of the Boson peak, we interpret the data within various model frameworks. Unlike earlier work, our study shows that this Boson peak is mainly ascribed to an additional T2 term of the specific heat, which may originate from the quasi-two-dimensional and short-range ordered structure units possibly existing in the metallic glasses.
文摘Highly compressively strained BiFeO3 thin films with different thickness are epitaxially grown on （001） LaA103 substrates and characterized using various techniques. The quasi-tetragonal phase with a giant axial ratio of -1.25 and its thickness-dependent evolution are investigated. An inter- esting twining structure of the quasi-tetragonal phase is evidenced in thicker films through detailed reciprocal space mapping, which becomes more pronounced with increasing film thickness. More- over, an interesting electric-field driven phase transition was evidenced in the film with a thickness of 38 nm, in which the quasi-tetragonal and rhombohedral phases are close to each other in energy landscape.
