Formation of non-equilibrium Fe-Au solid solutions in nanoclusters

TitleFormation of non-equilibrium Fe-Au solid solutions in nanoclusters
Publication TypeJournal Article
Year of Publication2013
AuthorsMukherjee P, Zhou L, Kramer MJ, Shield JE
Journal TitleApplied Physics Letters
Volume102
Pages243103
Date Published06
Type of ArticleArticle
ISBN Number0003-6951
Accession NumberWOS:000320962400087
Keywordscopper, defects, films, gold-iron alloys, magnetic-properties, nickel
Abstract

Fe-Au nanoclusters ranging in composition from similar to 33 to 79 at.% Fe were prepared by inert gas condensation. Resulting phases were single crystalline solid solutions for all compositions with significant defects present. The as-deposited clusters formed in a bcc structure for Fe content >65 at.% and in a fcc structure for Fe <65 at.%. Lattice parameters were expanded beyond rule-of-mixture estimates. The lattice expansion is explained by an analytical self-interstitial model. All clusters were ferromagnetic, although the fcc structures showed low magnetization. The low magnetizations are thought to arise from antiferromagnetic cores with uncompensated ferromagnetic surface spins. (C) 2013 AIP Publishing LLC.

URL<Go to ISI>://WOS:000320962400087
DOI10.1063/1.4811412