Wednesday, December 18, 2013
The Curie Temperature is a material specific temperature, where thermal motion of dipoles in a ferromagnetic material overcomes forces aligning the dipoles. Above this temperature dipoles do not align and the material looses its ability to be attracted to a magnet. Interestingly this temperature effect is sharp (I have no idea why) and thus leads to some interesting demonstrations.
Posted by Rob at 4:10 PM