Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Ferromagnetism01:31

Ferromagnetism

2.4K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
2.4K
Diamagnetism01:26

Diamagnetism

2.4K
Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
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....
2.4K
Paramagnetism01:30

Paramagnetism

2.5K
Paramagnets are materials with unpaired electrons that possess a finite magnetic moment. In the absence of a magnetic field, these moments are randomly oriented, and thus the net moment is zero. Under an external field, a torque acting on the moments tends to align them along the field's direction. However, the random thermal motion of electrons produces a torque opposite to the external field and tries to disorient the moments. These two competing effects align only a few moments along the...
2.5K
Colors and Magnetism03:02

Colors and Magnetism

11.6K
Color in Coordination Complexes
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...
11.6K
Atomic Nuclei: Nuclear Relaxation Processes01:23

Atomic Nuclei: Nuclear Relaxation Processes

647
In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis,  the precessing magnetic moments are randomly oriented around the z-axis.
647
Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

929
NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of...
929

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Unconventional Phase Shift in Spin Hall Magnetoresistance of Antiferromagnetic Insulators.

ACS applied materials & interfaces·2026
Same author

Giant spin-orbit magnetic state readout enhanced by a magnetic tunnel junction.

Nature communications·2026
Same author

Picosecond all-electrical perpendicular magnetization switching.

Nature communications·2026
Same author

Enhanced Damping-Like Torque through Strain Modulation in RuO<sub>2</sub>.

Nano letters·2026
Same author

Two-Dimensional Superconductivity at the CaZrO<sub>3</sub>/KTaO<sub>3</sub>(001) Heterointerfaces.

ACS nano·2026
Same author

Temperature-Resilient Reconfigurable Physical Unclonable Function Driven by Pulse Modulation Using CMOS-Integrated Spintronic Chips.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026

相关实验视频

Updated: Jun 25, 2025

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

2.7K

大场式旋转轨道扭矩和增强的磁化切换效率利用无形Mo.

Xinran Wang1, Ao Meng1, Yuxuan Yao1

  • 1Fert Beijing Institute, MIIT Key Laboratory of Spintronics, School of Integrated Circuit Science and Engineering, Beihang University, Beijing 100191, China.

Nano letters
|May 28, 2024
PubMed
概括

(Mo) 在SOT-MRAM设备中显示出有希望的旋转轨道扭矩 (SOT) 效率,使得高效的电流诱导磁化切换成为可能. 这项研究突出了Mo Mo的重点.

关键词:
外在的旋转霍尔效应 霍尔效应磁性随机访问存储器 (MRAM) 是一种磁性随机访问存储器.磁化开关 磁化开关 磁化开关旋转轨道扭矩 (SOT) 是指旋转轨道的扭矩.

更多相关视频

Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene
08:25

Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene

Published on: July 3, 2015

11.5K
Radio Frequency Magnetron Sputtering of GdBa2Cu3O7âˆ'ÃŽ ´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates
06:49

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7âˆ'ÃŽ ´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates

Published on: April 12, 2019

7.6K

相关实验视频

Last Updated: Jun 25, 2025

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

2.7K
Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene
08:25

Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene

Published on: July 3, 2015

11.5K
Radio Frequency Magnetron Sputtering of GdBa2Cu3O7âˆ'ÃŽ ´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates
06:49

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7âˆ'ÃŽ ´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates

Published on: April 12, 2019

7.6K

科学领域:

  • 材料科学 材料科学 材料科学
  • 凝聚物质物理学 凝聚物质物理学
  • 这就是Spintronics.

背景情况:

  • 旋转轨道扭矩磁性随机访问存储器 (SOT-MRAM) 提供高写入速度和低功耗.
  • (Mo) 在基于CoFeB/MgO的MRAM细胞中被探索其增强垂直磁性异质性 (PMA) 的潜力.
  • 尽管Mo的潜力很大,但其弱的自旋轨道合使其成为不太受欢迎的SOT材料.

研究的目的:

  • 在Mo/CoFeB/MgO异构中实验研究旋转轨道扭矩效率.
  • 为了评估Mo厚度和温度对SOT特性的影响.
  • 用基于Mo的异构结构来演示电流诱导的磁化切换.

主要方法:

  • 制造Mo/CoFeB/MgO异构的结构. 制造Mo/CoFeB/MgO异构的结构.
  • 试验测量缓冲式 (ξDL) 和场式 (ξFL) 旋转轨道扭矩效率.
  • SOT属性的温度依赖性表征.
  • 评估电流诱导的磁化开关.

主要成果:

  • 无形Mo表现出显著的SOT效率: = 0.015 ± 0.001 和 = 0.050 ± 0.001.
  • 观察到一种类似于阻尼的高场SOT效率比率 (ξFL/ξDL>3).
  • 有效的电流诱导磁化切换可以实现,其临界电流密度与伊 (Ir) 和 (W) 等重金属相美.

结论:

  • 在SOT-MRAM中显示出作为SOT源材料的巨大潜力.
  • 这些发现揭示了Mo作为垂直磁性异构 (PMA) 缓冲层的可行性.
  • 这项研究为在先进的SOT-MRAM设备应用中利用Mo开辟了新的途径.