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Graphene: Reversible Method of Magnetic Doping Paves Way For Semiconductor Use
concertina226 writes: A team of physicists at University of California, Riverside have discovered how to induce magnetism in graphene in a way that still preserves the material's electronic properties, which paves the way for graphene to be used as a semiconductor.
The researchers grew a sheet of yttrium iron garnet using laser molecular beam epitaxy in a laboratory (abstract). Magnetic substances like iron are known to disrupt graphene's electrical conduction properties, but yttrium iron garnet works well as it is an electric insulator.
When a graphene sheet was placed on top of an atomically smooth sheet of yttrium iron garnet, the graphene borrowed the magnetic properties from the yttrium iron garnet and became magnetized without the need for doping.
The researchers grew a sheet of yttrium iron garnet using laser molecular beam epitaxy in a laboratory (abstract). Magnetic substances like iron are known to disrupt graphene's electrical conduction properties, but yttrium iron garnet works well as it is an electric insulator.
When a graphene sheet was placed on top of an atomically smooth sheet of yttrium iron garnet, the graphene borrowed the magnetic properties from the yttrium iron garnet and became magnetized without the need for doping.
Graphene might be used in semiconductor devices whether magnetized or not; being able to magnetize it opens possibilities of making some types of devices but in no way is a prerequisite for practical applications of graphene in computers, semiconductors, etc.