For ten points, identify this physical effect which results in a magnetic moment is retained even when the outside magnetic field is zero, which occurs primarily in iron.
Heusler alloys are materials which exhibit this property even though their consituent parts do not. Rapidly quenching a liquid alloy can result in materials with this property that are not crystalline. A series of jumps which manifest as a high amount of small snaps in this proptery's exhibition is called the Barkhausen effect, and this phenomenon exists below a point known as the Curie temperature. For ten points, identify this physical effect which results in a magnetic moment is retained even when the outside magnetic field is zero, which occurs primarily in iron.
Heusler alloys are materials which exhibit this property even though their consituent parts do not.
{ferromagnetism}