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On the enhancement of magnetic anisotropy in cobalt clusters via non-magnetic doping
Virginia Commonwealth University, USA.
Virginia Commonwealth University, USA.
2014 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 26, no 125303Article in journal (Refereed) Published
Abstract [en]

We show that the magnetic anisotropy energy (MAE) in cobalt clusters can be significantlyenhanced by doping them with group IV elements. Our firstprincipleselectronic structurecalculations show that Co4C2 and Co12C4 clusters have MAEs of 25 K and 61 K, respectively. The large MAE is due to controlled mixing between Co dandC pstatesand can be furthertuned by replacing C by Si. Larger assemblies of such primitive units are shown to be stablewith MAEs exceeding 100 K in units as small as 1.2 nm, in agreement with the recentobservation of large coercivity. These results may pave the way for the use of nanoclustersinhigh density magnetic memory devices for spintronics applications

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2014. Vol. 26, no 125303
National Category
Condensed Matter Physics
Research subject
Physics, Condensed Matter Physics
Identifiers
URN: urn:nbn:se:lnu:diva-44561DOI: 10.1088/0953-8984/26/12/125303OAI: oai:DiVA.org:lnu-44561DiVA: diva2:822090
Available from: 2015-06-16 Created: 2015-06-16 Last updated: 2016-05-03Bibliographically approved

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Islam, Fhokrul
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