Ferromagnetic, shiny form of carbon discovered 'accidentally'

Researchers managed to discover a new form of carbon that shows ferromagnetism while they were attempting to synthesize penta-graphene. The newly discovered form of carbon is harder than stainless steel, about as conductive, and as reflective as a polished aluminium mirror. A 50 nanometers thick film of the material was found to reflect more than 90% of incoming light.