HTTP:: Ferromagnetic Properties Discovered in Graphite
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A group of researchers from the Netherlands has proven scientifically, for the first time, that graphite can be a permanent magnet at room temperature. The find could have significant implications for new types of electronic devices, nanostructures, and various types of regular and bio-sensors, the team reports. The discovery was made by scientists from the Eindhoven University of Technology (EUT) and the Radboud University Nijmegen (RUN), and is detailed in an online paper, published on October 4 in the respected journal Nature Physics.EUT researchers Jiri Cervenka and Kees Flipse, together with RUN colleague Mikhail Katsnelson, were surprised to find ferromagnetic properties in graphite. In addition to determining the order, they also managed to provide an explanation for the underlying mechanism, the journal entry shows. Graphite is made up of graphene sheets, which are held together by weak, interlayer interactions. This means that the individual layers can easily be br!
oken from each other, so the graphite is used as a basis for pencils, as well as for some types of lubricants. The team identifies 2-nanometer-wide boundaries of defects between highly ordered regions of carbon atoms as the main element that causes magnetic properties to occur in the material. They argue ...
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http://news.softpedia.com/news/Ferromagnetic-Properties-Discovered-in-Graphite-123315.shtml
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