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Ferrimagnetism

Time:2023-08-09 Views:1


Like ferromagnetic materials, when the magnetic field does not exist, Ferrimagnetism materials will still remain magnetized; Like Antiferromagnetism matter, adjacent electrons spin in opposite directions. These two properties are not contradictory. In Ferrimagnetism materials, different atoms belonging to different sublattices have opposite magnetic moments in opposite directions and different values. Therefore, the net magnetic moment of the material is not equal to 0, and the magnetization is not equal to zero, so it has weak ferromagnetism.

Because Ferrimagnetism materials are insulators. Ferrimagnetism materials in the high frequency time-varying magnetic field can be used as materials for microwave devices such as isolators, circulators, gyrators and so on, because the induced Eddy current is very small and can allow microwave to pass through.

Since the composition of Ferrimagnetism materials must have at least two different magnetic moments, only compounds or alloys can show Ferrimagnetism. Common Ferrimagnetism materials include Magnetite (Fe3O4), ferrite, etc

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