相关实验视频
Updated: Jun 23, 2025

Magnetic Tweezers for the Measurement of Twist and Torque
Published on: May 19, 2014
在稀土过渡金属铁磁体中的轨道扭矩
Shilei Ding1, Min-Gu Kang1, William Legrand1
1Department of Materials, <a href="https://ror.org/05a28rw58">ETH Zurich</a>, 8093 Zurich, Switzerland.
研究人员证明,Gd-Co合金中的轨道电流可以通过电气控制磁化. 他们通过调整Gd含量和温度来实现可调节的轨道扭矩,显示了旋转器件的潜力.
科学领域:
- 这就是Spintronics.
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
背景情况:
- 轨道电流为铁磁体中的磁化提供电气控制.
- 有效的轨道转换至旋转转变对于产生扭矩至关重要.
研究的目的:
- 研究铁磁Gd_{y}Co_{100-y}合金中的轨道电流注入.
- 分析轨道扭矩的生成和可调性.
- 确定Gd和温度在轨向旋转转换中的作用.
主要方法:
- 制造Gd_{y}Co_{100-y}/CuO_{x}和Gd_{y}Co_{100-y}/Pt双层的材料. 制造Gd_{y}Co_{100-y}/CuO_{x}和Gd_{y}Co_{100-y}/Pt双层的材料. 制造Gd_{y}Co_{100-y}/Pt双层的材料.
- 测量旋转轨道的霍尔角.
- 取决于温度的磁性表征.
主要成果:
- 在Gd_{y}Co_{100-y}中注入轨道电流会产生强大的,可调节的轨道扭矩.
- 有效旋转轨道霍尔角在Gd_{y}Co_{100-y}/CuO_{x}中达到-0.25.
- 与Co.相比,Gd站点表现出更强的,相反的轨道转换到旋转转换.
- 由于磁性排序,在低温时轨道扭矩显著增加.
结论:
- 基于Gd的合金对于产生强大的轨道扭矩是有效的.
- 通过组成和温度的鱼性为旋转电子应用开辟了道路.
- 低温增强表明,在有序的磁性状态下,转换效率得到了提高.
更多相关视频
09:06Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
06:49Radio Frequency Magnetron Sputtering of GdBa2Cu3O7âˆ'ÃŽ ´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates
Published on: April 12, 2019
相关概念视频
Ferromagnetism
Torque On A Current Loop In A Magnetic Field
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
Diamagnetism
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets....
Paramagnetism
Magnetic Moment of an Electron
Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...