Carbon magnets have spintronics potential
Graphene holds clue to ferromagnetism in carbon
Original graphene team sees it as a ‘goldmine’
Contamination can now be ruled out
Graphite from meteors is known to be ferromagnetic at room temperature.In 2002 a team from Trinity College, Dublin studied samples from the Canyon Diablo meteorite to try and explain why its iron content could account for only two-thirds of its magnetisation. However, at the time, it concluded that the ferromagnetism resulted from the magnetite or kamacite inclusions and was not intrinsic to graphite. But Graphene’s simple structure has now helped rule out contamination as a source of the magnetism.