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CARBON WORLDS
Czech scientists build non-metal magnet out of carbon
by Brooks Hays
Prague (UPI) Mar 06, 2017


Scientists in the Czech Republic created magnetized carbon by treating graphene layers with non-metallic elements.

Their invention, detailed in the journal Nature Communications, is the first non-metal magnet to maintain its magnetic properties at room temperature. Researchers say the discovery has a wide array of potential applications in the fields of biomedicine and electronics.

"For several years, we have suspected that the path to magnetic carbon could involve graphene -- a single two-dimensional layer of carbon atoms," lead researcher Radek Zboƙil, director of the Regional Center of Advanced Technologies and Materials at the Palacky University, Olomouc, said in a news release. "Amazingly, by treating it with other non-metallic elements such as fluorine, hydrogen, and oxygen, we were able to create a new source of magnetic moments that communicate with each other even at room temperature. This discovery is seen as a huge advancement in the capabilities of organic magnets."

The researchers at RCPTM also developed a theoretical model to explain how their unique chemical treatment yields magnetized graphene.

"In metallic systems, magnetic phenomena result from the behavior of electrons in the atomic structure of metals," explained researcher Michal Otyepka. "In the organic magnets that we have developed, the magnetic features emerge from the behavior of non-metallic chemical radicals that carry free electrons."

Graphene is already well-known among material scientists for its unique electronic properties and conductivity. Add magnetism to the mix and researchers say the possibilities for scientific application are endless.

"Such magnetic graphene-based materials have potential applications in the fields of spintronics and electronics, but also in medicine for targeted drug delivery and for separating molecules using external magnetic fields," said scientist Jiri Tucek.

Researchers at Olomouc also recently built the world's smallest metal magnet, and RCPTM scientists are currently trying to build magnetic molecules.

CARBON WORLDS
Three layers of graphene reveals a new kind of magnet
Mumbai, India (SPX) Feb 28, 2017
Metals have a large density of electrons and to be able to see the wave nature of electrons one has to make metallic wires that are only a few atoms wide. However, in graphene - one atom thick graphite - the density of electrons is much smaller and can be changed by making a transistor. As a result of the low density of electrons the wave nature of electrons, as described by quantum mechanics, i ... read more

Related Links
Carbon Worlds - where graphite, diamond, amorphous, fullerenes meet

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