This phenomenon arises from direct exchange interactions to minimize Coulomb repulsion, and the first theory explaining it was based on internal alignment of spin states and was developed by Peter Weiss.
The quantum mechanical description of it was developed by Heisenberg using his namesake exchange Hamiltonian. This phenomenon arises from direct exchange interactions to minimize Coulomb repulsion, and the first theory explaining it was based on internal alignment of spin states and was developed by Peter Weiss. The induced magnetic field becomes permanent even after the external one is removed in hysteresis associated with this phenomenon, which disappears above the Curie point. For 10 points, identify this type of magnetic behavior exhibited by materials like nickel, cobalt, and iron.
The quantum mechanical description of it was developed by Heisenberg using his namesake exchange Hamiltonian.
{ferromagnetism}