Understanding magnetism began thousands of years ago. In the 6th century AC, Tales de Miletus realized that some stones were able to draw iron: Magnetite was the first magnetic rock that was defined and later used in equipment production. Currently, there are two main types of magnetism: ferromagnetism and antiiferromagnetismHowever, new evidence proves that there is a new possibility.

In a study published in Nature magazine, researchers at the University of Nottingham, United The first proof of the possible existence of a third type of magnetism: Altemagnetism. The team suggests that discovery may have a significant impact on research on superconducting materials and contribute to the development of high -speed magnetic memories.

Altemagnetism was first proposed in 2022, but at that time, scientists did not present an empirical evidence. The new study brings data that can verify the presence of manganese (MN) and Tellür (TE), a chemical compound, which can be detected during the analysis of manganese teleterre (MNTE).

https://www.youtube.com/watch?v=36qppveh2c

To realize the experiment, scientists used a technique with X -Ray in different polarizations. By exposing the material to a certain polarized light, In MNTE, they registered the regions that revealed the first evidence of altermagnetism: the symmetry of time reversal.

So why is this new form of magnetism so relevant? And what are the differences between him and the other two species?

“We had two well -established magnetism species. All of the magnetic moments that you can imagine as small compass arrows on a atomic scale indicate in the same direction. And you can imagine this like a more alternative white and black chess board – an alternative to the antiferomismism, which neighbor magnetic moments point to opposite directions. ”He said.

Magnetism Types

Ferromanyetism and antiiferromagnetism are the most examined and widely applied magnetism types in various technologies. However, they are not just them. In addition, there are other forms such as ferrimagnetism, paramangnetism and diamagnetism. With the results of the new study, Altemagnetism can also integrate this list.

Although ferromagnetism (image) is best known, there are different types of magnetism. (Source: Getty Images)

According to Cambridge University, magnetic materials may have different types of magnetism depending on their composition and external conditions. It is important to emphasize that the term ‘magnetic moment’ is a feature that describes the alignment of these systems.

Learn Magnetism Types:

Ferromagnetism occurs when the magnetic moments of atoms are aligned in the same direction in the same direction, and when they maintain magnetism even without an external area. A classic example of ferromagnetism is magnets placed on the gates of the refrigerator.

Already in antiiferromagnetism, magnetic moments are regulated in opposite directions, which usually results in a cancellation effect. In this case, magnetic properties do not attract or push the magnets.

In paragnetism, individual magnetic moments remain randomly in the absence of a magnetic field, but are temporarily aligned when subjected to an external field. As a result, these materials are drawn to the magnets, but as soon as the magnetic field is removed, it loses the magnetism.

Diamagnetism occurs when it produces a magnetic field in the face of an external area where a material is applied; This results in a mild magnetic push. As a result, the diamanYetic materials are slightly pushed by magnets.
Finally, Ferrimagnetism occurs only when magnetic ions with different densities are directed in opposite directions, but without complete cancellation. Similar to ferromagnetism, but less dense.

Evidence of Altermagnetism

Since the first theory in 2022, scientists have sought ways to obtain data that proves the existence of this new magnetism. According to the latest study, This is the first proof that world is beyond a simple hypothesis.

Researchers say that the magnetism of a material is directly associated with the alignment of the magnetic moments of electrons affected by the SP. In Altemagnetism, Magnetic moments are directed to the opposite directions, but without an excellent antipararal alignment; The reason for this is a refraction in the reversal of time.

The image has an example of the process of realmagnetism in two different types of materials.
On the left, the picture in the mangânes telurretism pattern and rutenium dioxide on the right. (Source: Libor šmejkal/Wikimedia Commons)

In ferromagnets, magnetic moments are aligned in the same direction. Already in antiiferromagnetism, they are distributed in opposite directions and cancel each other.

Time return symmetry is a concept that analyzes how the properties of a material behave both normal and on the contrary. In the systems where this symmetry remains, the features remain unchanged regardless of the ‘time direction’.

When it comes to altermnettes, this symmetry is broken because these materials The return of electrons after reversing the time is a reversal feature.

“The benefit of Ferromanyets is that we have an easy way to read and write in memory by using these areas up or down. Changes have the speed and flexibility of an antiiferromagnet, but at the same time it has this important feature that reverses symmetry breaks,” Another author of the research Alfred Dal He said religion.

Based on evidence, scientists have developed a few altermarial devices and believe that their progress can be applied in the production of more efficiency and rapidly -rear magnetic memories compared to existing options. Besides, They say that Altemagnetism can contribute to the development of superconducting.

Electron spin is not a classic rotation, but an internal quantum feature that affects magnetism. Do you want to understand more? Show the opportunity to find out if the electrons are really turning. Until next time!

Source: Tec Mundo

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I'm Blaine Morgan, an experienced journalist and writer with over 8 years of experience in the tech industry. My expertise lies in writing about technology news and trends, covering everything from cutting-edge gadgets to emerging software developments. I've written for several leading publications including Gadget Onus where I am an author.

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