title: Magnetic memory in an isotopically enriched and magnetically isolated mononuclear dysprosium complex.
abstract: The influence of nuclear spin on the magnetic hysteresis of a single-molecule is evidenced. Isotopically enriched Dy(III) complexes are synthesized and an isotopic dependence of their magnetic relaxation is observed. This approach is coupled with tuning of the molecular environment through dilution in an amorphous or an isomorphous diamagnetic matrix. The combination of these approaches leads to a dramatic enhancement of the magnetic memory of the molecule. This general recipe can be efficient for rational optimization of single-molecule magnets (SMMs), and provides an important step for their integration into molecule-based devices.
authors.affiliation: Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, 263 Avenue du Général Leclerc, 35042 Rennes Cedex (France).
authors.forename: Fabrice
authors.initials: F
authors.lastname: Pointillart
authors.forename: Kevin
authors.initials: K
authors.lastname: Bernot
authors.forename: Stéphane
authors.initials: S
authors.lastname: Golhen
authors.forename: Boris
authors.initials: B
authors.lastname: Le Guennic
authors.forename: Thierry
authors.initials: T
authors.lastname: Guizouarn
authors.forename: Lahcène
authors.initials: L
authors.lastname: Ouahab
authors.forename: Olivier
authors.initials: O
authors.lastname: Cador
keywords: ab initio calculations; dysprosium; isotopic enrichment; magnetic hysteresis; single-molecule magnets