title: Magnetism in nanocrystalline gold.
abstract: While bulk gold is well known to be diamagnetic, there is a growing body of convincing experimental and theoretical work indicating that nanostructured gold can be imparted with unconventional magnetic properties. Bridging the current gap in experimental study of magnetism in bare gold nanomaterials, we report here on magnetism in gold nanocrystalline films produced by cluster deposition in the aggregate form that can be considered as a crossover state between a nanocluster and a continuous film. We demonstrate ferromagnetic-like hysteretic magnetization with temperature dependence indicative of spin-glass-like behavior and find this to be consistent with theoretical predictions, available in the literature, based on first-principles calculations.
authors.affiliation: Division of Materials Physics, Department of Physics, University of Helsinki, PO Box 43, FI-00014 Helsinki, Finland. vladimir.tuboltsev@helsinki.fi
authors.forename: Vladimir
authors.initials: V
authors.lastname: Tuboltsev
authors.forename: Alexander
authors.initials: A
authors.lastname: Savin
authors.forename: Alexandre
authors.initials: A
authors.lastname: Pirojenko
authors.forename: Jyrki
authors.initials: J
authors.lastname: Räisänen
mesh_terms: D005740:Gases; D005898:Glass / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D008280:Magnetics; D053768:Metal Nanoparticles / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D013499:Surface Properties; D013696:Temperature
chemical_list: D005740:Gases; D006046:Gold