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Potential Due to a Magnetized Object

Potential Due to a Magnetized Object

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...

Ferromagnetism

Ferromagnetism

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...

Diamagnetism

Diamagnetism

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.

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Related Experiment Video

Updated: Jul 1, 2026

Fabrication of Magnetic Platforms for Micron-Scale Organization of Interconnected Neurons

Fabrication of Magnetic Platforms for Micron-Scale Organization of Interconnected Neurons

Published on: July 14, 2021

Multi-State Memory in 2D Magnets via Thickness-Engineered Growth.

Bailing Li¹, Kun He^2,3, Biao Zhang¹

¹School of Materials Science and Engineering, Peking University, Beijing, China.

Advanced Materials (Deerfield Beach, Fla.)

|June 30, 2026

Summary

This summary is machine-generated.

Researchers developed a new method to control magnetic states in 2D magnets for spintronic memory. This breakthrough enables multi-state storage and spin encryption using CrTe nanoflakes.

Keywords:

2D magnet multi‐state storage multi‐thickness CrTe nanoflakes selective non‐uniform nucleation growth model

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Last Updated: Jul 1, 2026

Fabrication of Magnetic Platforms for Micron-Scale Organization of Interconnected Neurons

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Published on: July 14, 2021

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Published on: July 20, 2022

Area of Science:

Materials Science
Condensed Matter Physics
Nanotechnology

Background:

Two-dimensional (2D) magnets are promising for high-density spintronic memory.
Controlling magnetic domain configurations in 2D magnets is a significant challenge.

Purpose of the Study:

To develop a scalable strategy for controlling domain configurations in 2D magnets.
To achieve controlled, non-homogeneous growth of room-temperature ferromagnetic CrTe nanoflakes.

Main Methods:

Selective non-uniform nucleation strategy via chemical vapor deposition.
Leveraging the correlation between thickness profile and magnetization reversal.
Fabrication of vertical spin valve devices using multi-thickness CrTe nanoflakes.

Main Results:

Achieved controlled, non-homogeneous growth of ferromagnetic CrTe nanoflakes.
Demonstrated stepwise magnetization reversal in multi-thickness nanoflakes, creating multiple magnetic states.
Realized tunable multi-state magnetoresistance in vertical spin valve devices.

Conclusions:

Controlled synthesis of multi-thickness CrTe nanoflakes is a breakthrough in 2D magnet domain-state control.
This approach provides a robust material foundation for multi-state storage and spin encryption.
Enables bottom-up control of domain evolution for advanced spintronic applications.