What is ferromagnetism?

Question

What is ferromagnetism?

Answer 1

Ferromagnetism is a property of some substances, including iron and some alloys, in which application of a weak magnetic field within a specific temperature range induces high magnetism.

Small discrete regions within the substance domains align with the direction of an applied magnetic field and produce the bulk magnetization.

Answer 2

Is just another term for the type of magnetism that a fridge magnets have? Attraction to metals and leaving a charge on to another metal after its out of the megnetic field.