difference between demagnatisation and self demagnatisation
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Answer:
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When we magnetized permanently or temporarily of the ferromagnetic substance then it process is called magnetization. ... When a piece of iron touches to a magnet then the iron piece will be magnetized. Demagnetization : When we remove the magnetic property of the magnet it process is called demagnetization
Answer:
The demagnetizing field, also called the stray field, is the magnetic field generated by the magnetization in a magnet. The total magnetic field in a region containing magnets is the sum of the demagnetizing fields of the magnets and the magnetic field due to any free currents or displacement currents.The adiabatic (isentropic) demagnetization of paramagnetic materials is a technique used to produce temperatures very near absolute zero. It has been used to cool and study a magnetic substance itself or, through thermal contact, a secondary substance (refrigeration). See Adiabatic demagnetization, Ferromagnetism, Magnetization.
The process by which a magnetized sample of magnetic material tends to demagnetize itself by virtue of the opposing fields created within it by its own magnetization. Self-demagnetization inhibits the successful recording of short wavelengths or sharp transitions in a recorded signal.