magnet

[Gurudon]

i have heard that magnetic property of any substance is due to the motion of free electron in its atomic structure . can anybody explain about it in detail ?????????/

[Enthalpy]

Listen to a better source then.

[Ronald Hyde]

Only in the case of an electromagnet do the free electrons play the only part. In the case of magnetic materials such as the Iron core of an electromagnet, or a permanent magnet things are much more complicated and involve some Quantum Mechanics.