demagnetization

(noun)

The process of removing the magnetic field from an object.

Related Terms

  • isentropic
  • absolute zero

Examples of demagnetization in the following topics:

  • Adiabatic Processes

    • As an example, one can think of a multistage adiabatic magnetization-demagnetization cycle setup where a magnetic field is switched on and off in a controlled way.
    • This scheme is called adiabatic demagnetization cooling.
  • Ferromagnets and Electromagnets

    • Conversely, a permanent magnet can be demagnetized by hard blows or by heating it in the absence of another magnet.
  • Permanent Magnets

    • Permanent magnets are made from "hard" ferromagnetic materials such as alcino and ferrite that are subjected to special processing in a powerful magnetic field during manufacture, to align their internal microcrystalline structure, making them very hard to demagnetize.
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