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
Clarendon Laboratory, Department of Physics, Oxford University, Parks Road, Oxford OX1 3PU, UK.
Nano Lett. 2007 Jun;7(6):1551-5. doi: 10.1021/nl070366a. Epub 2007 May 8.
The magnetic properties of a monolayer of Mn12 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 8Li was used to probe the local static magnetic field distribution near the Mn12 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 Mn12 electronic magnetic moments. The temperature dependence of the line width indicates that the magnetic properties of the Mn12 moments in this low-dimensional configuration differ from bulk Mn12.
利用深度可控的β探测核磁共振技术，研究了嫁接到硅（Si）衬底上的单层Mn12单分子磁体的磁性。使用低能自旋极化放射性8Li束来探测Si衬底中Mn12单层附近的局部静磁场分布。由于Mn12电子磁矩产生的磁偶极场，共振线宽随注入深度的变化而强烈变化。线宽的温度依赖性表明，这种低维结构中Mn12磁矩的磁性不同于块状Mn12。
