Question

What is the reason for decrease in magnetic moment at high temperature with magnetic filed?

Answer 1

Explanation:

magnetization is given by the magnetic susceptibility of the material χm, which… ... Paramagnetic susceptibility is inversely proportional to the value of the absolute temperature. Temperature increases cause greater thermal vibration of atoms, which interferes with alignment of magnetic dipoles.

Answer 2

Explanation:

Heat can destroy magnetism. ...

It is this temperature at which the metal loses its ferromagnetic character.

As it loses its ferromagnetic character its magnetic moment also decreases.