A new source of magnetic nanoparticles_ _ I, Science_Ahmed
- 1. Follow @I_science_mag Sign up here to receive weekly lists of events by email Sign up here to receive notifications of new posts by email. Email Address The hunt for a viable renewable energy to replace oil or a healthy alternative to the dreaded sugar may dominate global headlines, but the story of rare earths is a juicy one that deserves to be told. This periodic table group of elements received their somewhat undeserving moniker due to their tendency to disperse themselves in inconvenient traces throughout the Earth’s crust. Rare earths are – in fact – relatively abundant, but that doesn’t mean their use is straightforward. Most of the problem with reliance on rare earths lies in China’s Posted on July 4, 2015 by Emma Brown A new source of magnetic nanoparticles? | I, Science http://www.isciencemag.co.uk/news/a-new-source-of-magnetic-nanoparti... 1 of 6 9/22/2015 10:15 AM
- 2. features Alice Anderson: Memory Mo ... September 11, 2015 Neil Stoker Event review Keeping private messages ... August 18, 2015 Signe Klange and Julia Lorke Features Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) image of the Moutain Pass rare earth open cast mine in California Now holding 95% of the world’s supply, China has spent the past 5 years trying rather successfully to drive prices skyward. In 2012, a consortium of countries led by the United States, including Canada, lodged an official complaint with the World Trade Organization against the increasing export duties and decreasing quotas appearing in China’s rare earths industry. China claimed that the measures were necessary for conservation and minimizing mining pollution, but ultimately the WTO ruled in favour of the US and gave China a deadline for A new source of magnetic nanoparticles? | I, Science http://www.isciencemag.co.uk/news/a-new-source-of-magnetic-nanoparti... 2 of 6 9/22/2015 10:15 AM
- 3. Book review 3D printing adaptation addiction Africa ageing alcohol algae Alzheimer's anatomy animal behaviour animal intelligence animal research animalsAntarctic antibiotic resistance antibiotics ants archaeology art artificial intelligence asteroid astronauts astronomy attraction audio babies bacteria badgers BBC bees behaviour Big Bang biodiversity biology birds Borneo bovine TB brain Brazil butterflies Café Scientifique cancer carbon carbon emissions CaSE cell biology CERN chemistry children chimpanzees China circadian rhythms citizen science climate changeclinical trials that can supply the same magnetic properties has become a major driver in science funding around the world. The European Innovation Partnership (EIP) highlights the rising prices of rare earths in its aim to help fast-track alternative materials. The Rare Earth Alternatives in Critical Technologies (REACT) program in the United States is also one of the resultant funding bodies. Researchers at Virginia Commonwealth University in the US, with support from REACT, believe they have found a viable, rare earth-free magnetic material. Ahmed El-Gendy, a former postdoctoral associate at VCU, led the research into cobalt iron carbide (CoFe C) synthesis. “I measured the same sample after 2 years, it still had the same magnetic properties, same corrosivity, same everything,” said El-Gendy commenting on results published in Applied Physics Letters at the end of May. With the last of China’s illegal trade practices due to be phased out by the time this goes to press, El-Gendy is still confident his material would be able to compete in a calmer market. “Rare earths are not stable with air, they can be easily oxidized so you cannot use them outdoors. They are not easy 2 A new source of magnetic nanoparticles? | I, Science http://www.isciencemag.co.uk/news/a-new-source-of-magnetic-nanoparti... 3 of 6 9/22/2015 10:15 AM
- 4. design dinosaurs disaster disease DIYscience DNA DNA damage DNA sequencing documentary dogs drugs earth earthquakes Ebola ecology economics ecosystems education electrons elephants emotions energy engineering environment environmental damage environmental management epidemiology epigenetics ethics evolution evolutionary biology exhibitions expectations exploration extinction extra-terrestrial life faces farming film fish flight flu foetus food forensics fossil fuels fossils funding future gender gender equality gene expression genes genetic disease genetics genome genome sequencing geology GM government graphene gut health healthcare hearing Higgs boson hippocampus historyhistory of science HIV hormones Hubble human human genome immune system Imperial College are also a possibility. “If you bind specific drugs to individual nanoparticles and put a big permanent magnet at a certain point, then you can get all the drugs to go to one place in the body rather than being randomly distributed everywhere,” he said. With a flood of important applications waiting intently, time will tell if the WTO’s intervention has allowed space in the market for rare earth alternatives. In the meantime, VCU plans to move forward on commercializing its novel compound, moving us one step closer to a happy ending. Emma Brown is studying for an MSc in Science Communication Images: Rare Earth Elements by Terence Wright; Mountain Pass Mine Wallpaper by Stuart Rankin; Cobalt nanoparticles by victorpuntes (Flickr, Creative Commons) Citation: Ahmed A. El-Gendy, A.A. et al. (2015) Experimental evidence for the formation of CoFe2C phase with colossal magnetocrystalline-anisotropy. Appl. Phys. Lett. 106, 213109; http://dx.doi.org/10.1063/1.4921789 Your email address will not be published. Required fields are marked * This entry was posted in Gallery , News and tagged China , magnets , nanotechnology , rare earths . Bookmark the permalink. A new source of magnetic nanoparticles? | I, Science http://www.isciencemag.co.uk/news/a-new-source-of-magnetic-nanoparti... 4 of 6 9/22/2015 10:15 AM
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