ABSTRACT
The discovery of the electron in the late nineteenth century led to the explanation of atomic magnetism as the result of the circulation of electrons around the atomic nucleus. Magnetism occurs in atoms where electron orbital motions and spins do not cancel one another out. Pierre Weiss proposed the existence of magnetic domains that consist of billions of subatomic magnets, with their separate magnetic moments joined together. Partial magnetism occurs when domains are partially oriented with respect to each other; complete magnetism occurs when the domains are completely aligned with an applied field.
