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Method of DemagnetisationThe main idea of demagnetization is to cause the magnetic domain to point in random directions.
HeatingWhen heated with Bunsen burner, the atoms of the magnet will vibrate vigorously and cause the magnetic domains to lose their alignment. Letting the magnet cool in the East−West direction will ensure that the domains will not realign.
HammeringHammering a magnet in the East−West direction alters the alignment of the magnetic domains and causes the magnet to lose its magnetism.
Electrical Method using an Alternative Current (a.c)Electrical method is the most effective method of demagnetization.
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