title: Giant field dependence of the low temperature relaxation of the magnetization in a dysprosium(III)-DOTA complex.
abstract: The square antiprismatic Na[Dy(DOTA)(H(2)O)]·4H(2)O complex was characterised by single crystal X-ray diffraction and ac magnetic susceptometry. Two competing mechanisms for magnetic relaxation as well as the remarkable increase of six orders of magnitude in the relaxation time upon application of a static magnetic field were detected.
authors.affiliation: Department of Chemistry Ugo Schiff and INSTM Research Unit, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy.
authors.forename: Pierre-Emmanuel
authors.initials: PE
authors.lastname: Car
authors.forename: Mauro
authors.initials: M
authors.lastname: Perfetti
authors.forename: Matteo
authors.initials: M
authors.lastname: Mannini
authors.forename: Annaick
authors.initials: A
authors.lastname: Favre
authors.forename: Andrea
authors.initials: A
authors.lastname: Caneschi
authors.forename: Roberta
authors.initials: R
authors.lastname: Sessoli