The magnetic properties of a monolayer of Mn-12 single molecule magnets grafted onto a silicon (Si) substrate have been investigated using depth-controlled beta-detected nuclear magnetic resonance. A low-energy beam of spin-polarized radioactive Li-8 was used to probe the local static magnetic field distribution near the Mn-12 monolayer in the Si substrate. The resonance line width varies strongly as a function of implantation depth as a result of the magnetic dipolar fields generated by the Mn-12 electronic magnetic moments. The temperature dependence of the line width indicates that the magnetic properties of the Mn-12 moments in this low-dimensional configuration differ from bulk Mn-12.
Local magnetic properties of a monolayer of Mn-12 single molecule magnets / Salman Z.; Chow K.H.; Miller R.I.; Morello A.; Parolin T.J.; Hossain M.D.; Keeler T.A.; Levy C.D.P.; MacFarlane W.A.; Morris G.D.; Saadaoui H.; Wang D.; Sessoli R.; Condorelli G.G.; Kiefl R.F.. - In: NANO LETTERS. - ISSN 1530-6984. - STAMPA. - 7:(2007), pp. 1551-1555. [10.1021/nl070366a]
Local magnetic properties of a monolayer of Mn-12 single molecule magnets
SESSOLI, ROBERTA;
2007
Abstract
The magnetic properties of a monolayer of Mn-12 single molecule magnets grafted onto a silicon (Si) substrate have been investigated using depth-controlled beta-detected nuclear magnetic resonance. A low-energy beam of spin-polarized radioactive Li-8 was used to probe the local static magnetic field distribution near the Mn-12 monolayer in the Si substrate. The resonance line width varies strongly as a function of implantation depth as a result of the magnetic dipolar fields generated by the Mn-12 electronic magnetic moments. The temperature dependence of the line width indicates that the magnetic properties of the Mn-12 moments in this low-dimensional configuration differ from bulk Mn-12.File | Dimensione | Formato | |
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