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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
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

2.4K
Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
2.4K
Magnetic Field Due To A Thin Straight Wire01:28

Magnetic Field Due To A Thin Straight Wire

4.8K
Consider an infinitely long straight wire carrying a current I. The magnetic field at point P at a distance a from the origin can be calculated using the Biot-Savart law.
4.8K
Magnetostatic Boundary Conditions01:28

Magnetostatic Boundary Conditions

877
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
877
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
Magnetic Force Between Two Parallel Currents01:13

Magnetic Force Between Two Parallel Currents

3.5K
Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and  the vector product of the length vector along the current element and the field due to the first conductor. According to the...
3.5K

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相关实验视频

Updated: Jun 7, 2025

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工程二维磁性异构结构:一个理论视角

Jinbo Pan1,2, Yan-Fang Zhang2, Yu-Yang Zhang2

  • 1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

Nano letters
|November 18, 2024
PubMed
概括
此摘要是机器生成的。

二维 (2D) 磁性异构结构为量子计算和内存设备提供了增强的性能. 这些材料的工程解锁了新的物理现象,并改善了先进应用的磁性.

关键词:
2D磁性异构结构的二维结构多重铁路公司 (Multiferroics)量子异常的霍尔效应在 Skyrmions 里面.这就是Spintronics.

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科学领域:

  • 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
  • 量子计算是一种量子计算.

背景情况:

  • 二维 (2D) 磁性材料对于下一代高速,低能耗电子产品至关重要.
  • 通过将二维磁性材料与其他材料集成而形成的异构结构具有协同效应.
  • 这些效应包括轨道杂交,旋转轨道合和对称性破坏,超越单层性能.

研究的目的:

  • 为工程 2D 磁性异构结构提供全面的理论分析.
  • 强调这些系统中管理层间相互作用的基本物理.
  • 审查调整磁性质和探索新奇现象的进展.

主要方法:

  • 层间相互作用的理论分析.
  • 对2D磁性异构结构的实验和计算研究的综述.
  • 检查属性调制的机制.

主要成果:

  • 工程 2D 磁性异构结构增强了磁性排序和库里温度 (Tc).
  • 异构结构使得拓磁结构的调制,旋转极化和电子带拓学成为可能.
  • 像谷极化和磁电合这样的新特性是可以实现的.

结论:

  • 2D磁性异构结构比单层材料具有显著的优势.
  • 对层间相互作用的进一步研究是释放其全部潜力的关键.
  • 应对当前的挑战将指导未来设备的优质磁性异构结构的设计.