Concept information
Preferred term
De-Magnetization
Definition
- 1. Demagnetization refers to the process of reducing or eliminating the magnetic properties of a material, particularly in the case of Nd–Fe–B magnets. This is typically done as a preliminary step in the physical separation process to allow for easier dismantling or crushing of the magnet-containing components. Demagnetization can be achieved through thermal methods, which involve heating the material to diminish its magnetic force, or nonthermal methods that utilize magnetic fields. The choice of demagnetization method depends on the specific circumstances and requirements. (ScienceDirect, AI generated definition based on: Handbook on the Physics and Chemistry of Rare Earths, 2013). 2. Demagnetization is the reduction or elimination of magnetization. It can be achieved by heating the object above its Curie temperature, where thermal fluctuations have enough energy to overcome exchange interactions, the source of ferromagnetic order, and destroy that order. Another way is to pull it out of an electric coil with alternating current running through it, giving rise to fields that oppose the magnetization. (https://www.nidec.com/en/technology/motor/glossary/item/demagnetization/). 3. Demagnetization refers to the process of reducing the magnetic force of a material, often done as an initial step in the physical separation of waste products containing magnets. This can be achieved through both thermal and nonthermal methods, each with their own advantages and disadvantages. (ScienceDirect, AI generated definition based on: Handbook on the Physics and Chemistry of Rare Earths, 2013)
Broader concept
URI
https://purls.helmholtz-metadaten.de/evoks/sdv/DeMagnetization
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