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Effects of implanted Fe+ fluences on the growth and magnetic properties of surface nanoclusters

TitleEffects of implanted Fe+ fluences on the growth and magnetic properties of surface nanoclusters
Publication TypeJournal Article
Year of Publication2012
AuthorsLeveneur, J., Kennedy J. V., Williams G. V. M., Fang F., Metson J. B., and Markwitz A.
JournalMaterials Science Forum
Volume700
Pagination37-40
ISSN02555476
ISBN Number9783037852637
KeywordsChain-like, electric resistance, Electron beam annealing, Electron beams, Fluences, Ion beam synthesis, Iron nanoclusters, Low energies, Magnetic nanoclusters, Magnetic properties, magnetism, Nanoclusters, Nanotechnology, Remnant magnetization, Saturation fields, Structural and magnetic properties, Superparamagnetism, Surfaces
Abstract We have fabricated surface magnetic iron nanoclusters using low energy Fe+ implantation and electron beam annealing. We find that changing the fluence has a significant effect on the nanocluster growth, structural and magnetic properties. Low fluences lead to small nanoclusters and superparamagnetism, while high fluences result in larger chain-like nanoclusters that have high remnant magnetizations and a significantly reduced saturation field. Our results show that the nanostructure and the magnetic properties can be tuned by varying the Fe+ fluence, which means that a reliable method can be used to make surface nanoclusters for a variety of applications (e.g. large magnetoresistance sensors with no hysteresis). © (2012) Trans Tech Publications, Switzerland.
URLhttp://www.scopus.com/inward/record.url?eid=2-s2.0-80053993091&partnerID=40&md5=05e8a70b82ca534e11129bd8206077a3
DOI10.4028/www.scientific.net/MSF.700.37