Page "Ferrimagnetism" Paragraph 6

Ferrimagnetic materials are like ferromagnets in that they hold a spontaneous magnetization below the Curie temperature, and show no magnetic order ( are paramagnetic ) above this temperature.

However, there is sometimes a temperature below the Curie temperature at which the two sublattices have equal moments, resulting in a net magnetic moment of zero ; this is called the magnetization compensation point.

This compensation point is observed easily in garnets and rare earth-transition metal alloys ( RE-TM ).

Furthermore, ferrimagnets may also exhibit an angular momentum compensation point at which the angular momentum of the magnetic sublattices is compensated.

This compensation point is a crucial point for achieving high speed magnetization reversal in magnetic memory devices.