title: Orbit and spin resolved magnetic properties of size selected [ConRh]⁺ and [ConAu]⁺ nanoalloy clusters.
abstract: Bi-metallic nanoalloys of mixed 3d-4d or 3d-5d elements are promising candidates for technological applications. The large magnetic moment of the 3d materials in combination with a high spin-orbit coupling of the 4d or 5d materials give rise to a material with a large magnetic moment and a strong magnetic anisotropy, making them ideally suitable in for example magnetic storage devices. Especially for clusters, which already have a higher magnetic moment compared to the bulk, these alloys can profit from the cooperative role of alloying and size reduction in order to obtain magnetically stable materials with a large magnetic moment. Here, the influence of doping of small cobalt clusters on the spin and orbital magnetic moment has been studied for the cations [Co(8-14)Au](+) and [Co(10-14)Rh](+). Compared to the undoped pure cobalt [Co(N)](+) clusters we find a significant increase in the spin moment for specific Co(N-1)Au(+) clusters and a very strong increase in the orbital moment for some Co(N-1)Rh(+) clusters, with more than doubling for Co12Rh(+). This result shows that substitutional doping of a 3d metal with even just one atom of a 4d or 5d metal can lead to dramatic changes in both spin and orbital moment, opening up the route to novel applications.
authors.affiliation: Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands. d.dieleman@science.ru.nl a.kirilyuk@science.ru.nl.
authors.forename: Dennis
authors.initials: D
authors.lastname: Dieleman
authors.forename: Matthias
authors.initials: M
authors.lastname: Tombers
authors.forename: Lars
authors.initials: L
authors.lastname: Peters
authors.forename: Jennifer
authors.initials: J
authors.lastname: Meyer
authors.forename: Sergey
authors.initials: S
authors.lastname: Peredkov
authors.forename: Jeroen
authors.initials: J
authors.lastname: Jalink
authors.forename: Matthias
authors.initials: M
authors.lastname: Neeb
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Eberhardt
authors.forename: Theo
authors.initials: T
authors.lastname: Rasing
authors.forename: Gereon
authors.initials: G
authors.lastname: Niedner-Schatteburg
authors.forename: Andrei
authors.initials: A
authors.lastname: Kirilyuk