This lab focuses on the study of the properties of artificial magnetic nanostructures of both organic and inorganic materials, including ultrathin films, multilayers, ordered networks (generated by lithographic processes and self-organization) and nanoparticles, with particular emphasis on the magnetization reversal processes. The nanostructures are grown in ultra-high-vacuum (UHV) by molecular beam epitaxy (MBE) and characterized with standard surface science tools. A more specific organic-MBE system for developing well-controlled organic and hybrid (organic-inorganic) ultrathin film and multilayer nanostructures, has been set-up, towards molecular spintronic. Two home-made high resolution magneto-optic based magnetometers are available for the magnetic characterization at room temperature. One in reflection (v-MOKE vectorial Magneto-Optic Kerr-Effect magnetometry) and other in transmission (tr-MOFE time-resolved Magneto-Optic Faraday-Effect magnetometry), dedicated for opaque and semi-transparent magnetic nanostructures, respectively. In both set-ups, the magnetic measurements can be performed at different applied field angles (in the whole angular range with an angular resolution better that 0.5º) and with a wide range of dynamic frequencies (i.e., field sweep rates ranging from 1x10-6 T/s to 1x107 T/s). Two new magneto-optic Kerr set-ups are in development: M(R)OKE (dual Magneto-(R)resistance and Magneto-Optic Kerr effect magnetometry) will allow us to study simultaneously the magneto-resistive response and the magnetization reversal processes in magnetic nanostructures at room temperature; LT-vMOKE (Tristan), in which by using a prototype He-cryostat system with in-vacuum rotatory sample motion we could perform the magnetic characterization down to 5 K and up to 500 K
