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Magnetism in small bimetallic Mn-Co clusters
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Materials Science, Materials Theory.
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2008 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 78, no 1, 014402- p.Article in journal (Refereed) Published
Abstract [en]

Effects of alloying on the electronic and magnetic properties of MnxCoy (x+y=n=2-5, x=0-n) and Mn2Co11 nanoalloy clusters are investigated using the density-functional theory. Unlike the bulk alloy, the Co-rich clusters are found to be ferromagnetic and the magnetic moment increases with Mn concentration and is larger than the moment of pure Co-n clusters of same size. For a particular sized cluster the magnetic moment increases by 2 mu(B)/Mn-substitution, which is found to be independent of the size and composition. All these results are in good agreement with recent Stern-Gerlach experiments [Phys. Rev. B 75, 014401 (2007) and Phys. Rev. Lett. 98, 113401 (2007)]. Likewise in bulk MnxCo1-x alloy, the local Co moment decreases with increasing Mn concentration.

Place, publisher, year, edition, pages
2008. Vol. 78, no 1, 014402- p.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-109159DOI: 10.1103/PhysRevB.78.014402ISI: 000258190000061OAI: oai:DiVA.org:uu-109159DiVA: diva2:249017
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2012-03-28Bibliographically approved

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Sanyal, Biplab
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