This phenomenon, which is described by the Ising model, shows up as a vertical offset in a plot of the hysteresis that this phenomenon exhibits.
One model for this phenomenon considers the interactions of points which can have spins distributed uniformly around a circle. That model, the Potts model, is a generalization of a model whose two-dimensional version was solved by Lars Onsager and uses a lattice of +1 and -1 spins. This phenomenon, which is described by the Ising model, shows up as a vertical offset in a plot of the hysteresis that this phenomenon exhibits. Spontaneous symmetry breaking causes this phenomenon to arise below the Curie temperature, at which point a material's magnetic domains become aligned. For 10 points, identify this form of magnetism found in cobalt, nickel, and iron.
One model for this phenomenon considers the interactions of points which can have spins distributed uniformly around a circle.
ferromagnetism [Prompt on magnetism. Do not accept "antiferromagnetism."]