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相关概念视频

Ferromagnetism01:31

Ferromagnetism

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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...
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Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

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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.
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Magnetic Field due to Moving Charges01:23

Magnetic Field due to Moving Charges

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A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
8.4K
Diamagnetism01:26

Diamagnetism

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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...
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Magnetic Field Due To A Thin Straight Wire01:28

Magnetic Field Due To A Thin Straight Wire

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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.
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Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
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在二维磁性材料的近期进展.

Guangchao Shi1, Nan Huang2, Jingyuan Qiao1

  • 1Institute of Flexible Electronics (IFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an 710072, China.

Nanomaterials (Basel, Switzerland)
|November 8, 2024
PubMed
概括
此摘要是机器生成的。

在二维 (2D) 磁性材料中的巨型磁电阻为先进的电子和自旋电子提供了令人兴奋的可能性. 这篇评论探讨了它们的特性,像异常霍尔效应这样的效应,以及在新型设备中的应用.

关键词:
这种二维磁铁是二维磁铁.这是一种抗铁磁的抗铁磁剂.铁磁性铁磁性是一种铁磁性物质.旋转的顺序是旋转的顺序.旋转电子技术 (spintronics) 是一个

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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
  • 这就是Spintronics.

背景情况:

  • 二维 (2D) 磁性材料由于其层次结构,具有独特的特性.
  • 这些材料中的巨型磁电阻 (GMR) 效应对各种应用具有重要意义.

研究的目的:

  • 为快速发展的二维磁性材料研究领域提供全面的概述.
  • 通过磁性合类型对二维磁性材料进行分类,并突出显示关键的物理效应.

主要方法:

  • 2D磁性材料的文献综述和理论研究.
  • 基于磁性合的材料编目目录.
  • 讨论诸如磁圆二重化,磁光克尔效应和异常霍尔效应等现象.

主要成果:

  • 基于其磁性合的二维磁性材料的分类.
  • 详细讨论重要的效应,包括磁圆二重化,磁光克尔效应和异常的霍尔效应.
  • 在二维磁铁中探索旋转纹理,如磁子和磁体.

结论:

  • 二维磁性材料具有独特的特性,适用于传感,数据存储,电子和自旋电子.
  • 进一步研究2D磁铁中的磁子,斯基米子和旋转纹理,对未来的设备应用有很大的前景.