title: The metallofullerene field-induced single-ion magnet HoSc2 N@C80.
abstract: The low-temperature magnetic properties of the endohedral metallofullerene HoSc2 N@C80 have been studied by superconducting quantum interference device (SQUID) magnetometry. Alternating current (ac) susceptibility measurements reveal that this molecule exhibits slow relaxation of magnetization in a small applied field with timescales in the order of milliseconds. The equilibrium magnetic properties of HoSc2 N@C80 indicate strong magnetic anisotropy. The large differences in magnetization relaxation times between the present compound and the previously investigated DySc2 N@C80 are discussed.
authors.affiliation: Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland); Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI (Switzerland). jan.dreiser@epfl.ch.
authors.forename: Jan
authors.initials: J
authors.lastname: Dreiser
authors.forename: Rasmus
authors.initials: R
authors.lastname: Westerström
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhang
authors.forename: Alexey A
authors.initials: AA
authors.lastname: Popov
authors.forename: Lothar
authors.initials: L
authors.lastname: Dunsch
authors.forename: Karl
authors.initials: K
authors.lastname: Krämer
authors.forename: Shi-Xia
authors.initials: SX
authors.lastname: Liu
authors.forename: Silvio
authors.initials: S
authors.lastname: Decurtins
authors.forename: Thomas
authors.initials: T
authors.lastname: Greber
keywords: endohedral fullerenes; holmium; lanthanides; magnetic anisotropy; single-ion magnets