Giant field dependence of the low temperature relaxation of the magnetization in a dysprosium(III)-DOTA complex

Pierre-Emmanuel Car; Mauro Perfetti; Matteo Mannini; Annaick Favre; Andrea Caneschi; Roberta Sessoli

doi:10.1039/c0cc05850e

Giant field dependence of the low temperature relaxation of the magnetization in a dysprosium(III)-DOTA complex

Chem Commun (Camb). 2011 Apr 7;47(13):3751-3. doi: 10.1039/c0cc05850e. Epub 2011 Feb 23.

Authors

Pierre-Emmanuel Car¹, Mauro Perfetti, Matteo Mannini, Annaick Favre, Andrea Caneschi, Roberta Sessoli

Affiliation

¹ Department of Chemistry Ugo Schiff and INSTM Research Unit, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy.

PMID: 21347457
DOI: 10.1039/c0cc05850e

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.