This phenomenon exhibited by Heusler alloys is modeled as a lattice of spins by the Potts and Ising models. Materials exhibiting it are characterized 
This phenomenon exhibited by Heusler alloys is modeled as a lattice of spins by the Potts and Ising models. Materials exhibiting it are characterized by their coercivity and remanence. Arising within Weiss domains, this phenomenon exhibits a lag response that traces out an S-shaped hysteresis curve. This phenomenon remains even in the absence of an external magnetic field, and is exhibited below the Curie point by materials like neodynium, nickel, and cobalt. For 10 points, name this type of permanent magnetism exhibited by iron.
This phenomenon exhibited by Heusler alloys is modeled as a lattice of spins by the Potts and Ising models.
{ferromagnetism} [accept word forms; prompt on "{magnetism}" before it is mentioned]