Talk:Superparamagnetic effect

This topic seems to have two articles, see: http://en.wikipedia.org/wiki/Superparamagnetism

Sounds like a good idea to merge. Achen00
 * No kidding. Geekosaurus

Merge all 3 articles
The three articles should merge. Superparamagnetism occurs below the Curie temperature and it is not a phase transition. The superparamagnetic effect occurs when the dimensions of each crystalite/particle reduce below a critical size. The physics is such that the surrounding thermal energy becomes comparable to the anisotropy barrier (note that, exchange coupling between neighbouring spins within the crystalite is still retained). This causes the ferromagnetic material to display paramagnetic behaviour; one where each crystalite behaves as a "giant" moment (clusters of spins acting in unison). Hence the name superparamagnetism.

In the context of magnetic memory storage technology, this means that as the storage density increases, crystalite size decreases. Eventually, as bit densities increase, we will reach the superparamagnetic limit. Storage of information becomes increasingly difficult because bits are no longer stable enough (disrupted due to ambient thermal energies) to remain in a particular orientation.


 * Ok, this makes more sense. (I retract/remove the 'do not merge' I said before). As I had said I do not really know about this. BlankAxolotl 21:14, 2 June 2006 (UTC)

Merge the other two.
Merge the other two articles, but probably not this one. --M1ss1ontomars2k4 04:37, 4 May 2006 (UTC)