Magnetic shape memory effect based on magnetic-field control of the d orbital degree of freedom

基于d轨道自由度磁场控制的磁形状记忆效应

• 批准号: 19340089
• 负责人: ARIMA Takahisa
• 金额: $ 12.06万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19340089/
• 关键词: 強相関系; 形状記憶効果; 強相関電子系; 磁性; 低温物性; セラミックス; 形状記憶

Crystallographic and magnetic phase diagram in spinel-type Fe_<1-x>Mn_xCr_2O_4 has been obtained. The phase diagram implies that the ordering of the 3d-orbitaloccupation should dominate the direction of the spin easy axis. Based on this idea, the magneto-mechanical coupling in another spinel compound MnV_2O_4 has been investigated. A shape memory effect with external stimuli of magnetic fields instead of stress has been successfully achieved.

尖晶石型Fe_ <1-x> Mn_xcr_2o_4中的晶体学和磁相图已获得。相图意味着3D-骨倒入的排序应主导自旋易于轴的方向。基于这个想法，已经研究了另一个尖晶石化合物MNV_2O_4中的磁机械耦合。成功实现了具有磁场外部刺激的形状记忆效应。

项目成果

Electrostatic potential analysis of the orbital-ordered phase of spinel oxide FeCr_2O_4 using convergent-beam electron diffraction

尖晶石氧化物FeCr_2O_4轨道有序相的会聚束电子衍射静电势分析

• 发表时间: 2008
• 作者: H. Hiraka;D. Matsumura;Y. Nishihata;J. Mizuki;K. Yamada;D. Morikawa
• 通讯作者: D. Morikawa

TEM observations of nanostructures formed near phasetransformation temperatures

相变温度附近形成的纳米结构的 TEM 观察

• 发表时间: 2008
• 作者: Makoto Iwata;Yusuke Hasegawa;Rintaro Aoyagi;Masaki Maeda;Naoki Wakiya;Hisao Suzuki;and Yoshihiro Ishibashi;横山淳;Y. Murakami
• 通讯作者: Y. Murakami

Domain Control in Orbital-Ordered Systems

轨道有序系统中的域控制

• 发表时间: 2009
• 作者: 上野敏幸;斉藤千尋;今泉伸夫;樋口俊郎;荒川政彦;M. K. Kurosawa and T. Shigematsu;T. Arima
• 通讯作者: T. Arima

放射光X線精密構造解析によるTi酸化物の軌道秩序の直接観測

同步加速器X射线精密结构分析直接观察Ti氧化物中的轨道有序度

• 发表时间: 2010
• 作者: 磯部真里;大久保勇男;北村未歩;松本祐司;鯉沼秀臣;尾嶋正治;河野昌仙;鈴木健士;澤博
• 通讯作者: 澤博

Electrical control of direction of orbital stripes in charge-orbital ordered state of a single-layered manganite La_<1/2>Sr_<3/2>MnO_4

单层锰氧化物La_<1/2>Sr_<3/2>MnO_4电荷轨道有序态轨道条纹方向的电控制

• 发表时间: 2009
• 作者: Makoto Iwata;Zdravko Kutnjak;Yoshihiro Ishibashi;and Robert Blinc;Yoshihiro Ishibashi and Makoto Iwata;S. Kurimura;S. Konno
• 通讯作者: S. Konno