After receiving his doctorate he was a postdoctoral fellow at the Los Alamos National Laboratory working on neutron scattering from magnetic heterostructures. In 2001 he joined the Materials Science Division of the Argonne National Laboratory, where he is currently a staff member in the Magnetic Thin Film Group. His research interests encompass a wide variety of magnetism related subjects, including basic properties of magnetic heterostructures, spin-transport in novel geometries, and biomedical applications of magnetism. His main research focus has recently been on pure spin currents investigated by magnetotransport and magnetization dynamic measurements. He has more than 100 publications, four book chapters, and three magnetism-related U.S. patents. In the past he served as the chair for the Topical Group on Magnetism and its Applications of the American Physical Society and the chair of Technical Committee for the IEEE Magnetics Society. Currently he is an associate editor for the Journal of Applied Physics and a senior IEEE member. He has been active in many Intermag and Magnetism and Magnetic Materials Conferences, including serving as a publication co-chair for the 2007 Joint MMM/Intermag conference and a program co-chair of the MMM conference in 2010. For 2011 he has been designated a Distinguished Lecturer for the IEEE Magnetics Society and in 2013 he will be the general chair for the MMM Conference.