ferrimagnetiset
Ferrimagnetism is a phenomenon exhibited by certain magnetic materials. Like ferromagnetism, it involves spontaneous magnetic ordering below a certain temperature, known as the Curie temperature. However, in ferrimagnetic materials, the magnetic moments of the atoms are aligned in opposite directions, but they do not cancel each other out entirely. This is because the magnetic moments of the two or more types of atoms in the crystal lattice are unequal in magnitude. The net magnetic moment is therefore the difference between the opposing moments, resulting in a weaker overall magnetization than in ferromagnetic materials.
Ferrimagnetic materials are often compounds containing different transition metal ions. A classic example is the ferrite