What class does neodymium belong to?

Question

Electronics

Neodymium is a powerful permanent magnet. So, it refers to paramagnets, more precisely to feromagnets? I just found a text where it is referred to as antiferromagnets. How so to anti if it is such a powerful magnet? Isn't antiferromagnets a weakly magnetic material?

Answer 1

Ferromagnets are substances in which the magnetic moments of atoms or ions are in a state of spontaneous magnetic ordering, and the resulting magnetic moments of each of the domains are nonzero .
Antiferromagnets are substances in which the magnetic moments of atoms or ions are in a state of spontaneous magnetic ordering, with the resulting magnetic moments of each of the domains being zero .
Both are magnetized in an external field.

Answer 2

Neodymium magnets are an alloy. Which, in addition to neodymium, includes iron and boron.
And it becomes an antiferromagnet at temperatures below 20 K proof can be found here . Up to these temperatures it is paramagnetic.