The magnetic property of material will be lost when it is
1. Heated to a high temperature.
Heating a magnet
2. Continuously hammered.
Hammering a magnet
3. Dropped from a certain height.
Dropping a magnet
4. Placing the magnets near an electronic device and improper storage will also affect the magnetic field.
5. When a magnet is kept idle for a long time, i.e., if a magnet is not in use for some time.
6. When passed with a current in a coil that encloses the magnet.