Magnetically disordered minerals ( diamagnets and paramagnets ) contribute a weak magnetism and have no remanence.
2.
Nevertheless, these values are orders of magnitude smaller than the magnetism exhibited by paramagnets and ferromagnets.
3.
A simple model of a paramagnet concentrates on the particles which compose it which do not interact with each other.
4.
In that case the Curie-point is seen as a phase transition between a ferromagnet and a'paramagnet '.
5.
Even for iron it is not uncommon to say that " iron becomes a paramagnet " above its relatively high Curie-point.
6.
This explains why superparamagnetic nanoparticles have a much larger susceptibility than standard paramagnets : they behave exactly as a paramagnet with a huge magnetic moment.
7.
This explains why superparamagnetic nanoparticles have a much larger susceptibility than standard paramagnets : they behave exactly as a paramagnet with a huge magnetic moment.
8.
This critical temperature represents the point at which the materials switches from a simple paramagnet to a bulk magnet, and can be detected by ac susceptibility and specific heat measurements.
9.
However, Earnshaw's theorem only applies to objects with positive susceptibilities, such as ferromagnets ( which have a permanent positive moment ) and paramagnets ( which induce a positive moment ).
10.
It is not uncommon to call such materials'paramagnets', when referring to their paramagnetic behavior above their Curie or N�el-points, particularly if such temperatures are very low or have never been properly measured.
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