You read about superatoms here at vX about 4 years ago.
Basically, you combine atoms of an individual element into a molecule that shares those individual atoms electron clouds. Since a lot of chemistry is determined by the configuration of the outside shell of electrons, you can get the superatom to act like an element different from what is made of. I posted about getting sodium to act like helium, which is pretty cool because you could make something inert (like helium) out of something that isn’t, and pretty useful since you can’t make other stuff out of inert helium.
In a nutshell: it’s alchemy.
The new advance in this area is stable magnetism.
Magnetism is inherently unstable in the naturally occurring stuff. This is why wires can create magnetic fields only when there is current going through them. The reason is that the magnetism “wears off” as it gets “spread” across neighboring atoms.
To produce stable magnetism, they put the magnetic atom (vanadium) inside a shell of cesium which acts inert. The magnetism of the entire unit can’t get transferred somewhere else because the vanadium can’t come in contact with anything other than the inert cesium.
Via New Scientist.