O.M. Stewart Colloquium Series presents: Dr. Valeria Lauter

Monday, February 12, 2018 4:00pm

Physics Bldg. Library, Rm. 223A


Dr. Valeria Lauter, Oak Ridge National Laboratory

MU Physics & Astronomy Department's O. M. Stewart Colloquium Series presents, "Inferring the Magnetic Nanostructures for Spintronics with Polarized Neutron Scattering," Monday, February 12, 4:00 p.m.

Dr. Valeria Lauter, Oak Ridge National Laboratory, writes, "Probing the spin structure in thin films and nanostructured materials via Polarized Neutron Reflectometry (PNR) is a type of experiments addressing not only a kind of "surface visualization" or integration over the whole sample size. PNR is a tool providing depth resolved magnetometry that requires high intensity with a low background and a high polarization of the neutron beam.

In this talk I will make an introduction to PNR, present the Magnetism Reflectometer at the Spallation Neutron Source and will discuss experiments on several systems exhibiting the phenomenon of exchange coupling in topological insulator - ferromagnetic insulator heterostructures, the results on in-situ annealing and Boron diffusion in perpendicular magnetic tunnel junction, and the current project on tailoring intermolecular and interfacial interactions in organic spin valves."

Research at Oak Ridge National Laboratory's Spallation Neutron Source was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy.