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Potential Due to a Magnetized Object01:24

Potential Due to a Magnetized Object

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Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...
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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 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...
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Magnetic Field Due To A Thin Straight Wire01:28

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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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Magnetic Vector Potential01:15

Magnetic Vector Potential

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In electrostatics, the electric field can be written as the negative gradient of the potential. In magnetostatics, the zero divergence of the magnetic field ensures that the magnetic field can be expressed as the curl of a vector potential. This potential is known as the magnetic vector potential.
Consider an ideal solenoid with n turns per unit length and radius R. If I is the current through the solenoid, the magnetic field inside the solenoid is expressed as the product of vacuum...
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Divergence and Curl of Magnetic Field01:26

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The magnetic field due to a volume current distribution given by the Biot–Savart Law can be expressed as follows:
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Related Experiment Video

Updated: Aug 6, 2025

Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene
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Magnetism in curved VSe2 monolayers.

Kexin Mi1, Yufeng Guo1

  • 1State Key Laboratory of Mechanics and Control of Mechanical Structures, MOE Key Laboratory for Intelligent Nano Materials and Devices, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics Nanjing 210016 China yfguo@nuaa.edu.cn.

RSC Advances
|March 17, 2023
PubMed
Summary

Curving magnetic VSe2 monolayers causes periodic magnetic moment fluctuations and charge density waves. This discovery offers new avenues for designing mechanical magnetic devices.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Nanotechnology

Background:

  • Vanadium diselenide (VSe2) monolayers are magnetic 2D materials with potential applications.
  • Understanding the impact of mechanical deformation on their properties is crucial for device development.

Purpose of the Study:

  • To investigate the effects of curvature on the electronic and magnetic properties of VSe2 monolayers.
  • To establish a model correlating curvature with magnetic behavior.

Main Methods:

  • Extensive first-principles calculations were employed.
  • Analysis of magnetic moments, charge density, and bending energies.

Main Results:

  • Curvature induces periodic fluctuations in V atom magnetic moments and charge density waves in VSe2 monolayers.
  • Bending energies vary non-monotonically with curvature for 1T-VSe2, unlike 2H-VSe2.
  • Curvature modifies V-Se bond structure, leading to periodic magnetic ordering.

Conclusions:

  • Mechanical bending significantly alters the magnetic properties of VSe2 monolayers.
  • A phenomenological model describes the relationship between curvature and magnetic moment.
  • Findings suggest potential for developing novel magnetic devices through mechanical design.