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
CONDORELLI, Guglielmo Guido;
2007-01-01
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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