Four-Year College Faculty-Student Team Fellowships Program
During the summer of 2003, Prof. Paul Shand and student Christopher Stark from the University of Northern Iowa and Prof. Andrew Kunz and student Jason Levin-Koopman from Lawrence University were joining the MRSEC research team.
Paul worked with Diandra Leslie-Pelecky on the magnetic behavior of frozen spin systems, such as nanostructured GdAl2. Emphasis is on low-temperature blocking and interaction effects and their interpretation as spin-glas properties. One aim was to investigate the leading dipolar anisotropy and coercivity contribution of the Gd. Christopher worked with Dave Sellmyer and Minglang Yan on cluster-assembled materials. The aim of the research was to develop and investigate highly anisotropic fine-grained FePt materials for high-density magnetic recording. The project focused on using an alternating gradient force magnetometer (AGFM) to perform moment-decay measurements on thin-film FePt:C with various amounts of C and various annealing conditions. This relatively new technique allows us to estimate the stability parameter, the anisotropy constant, and the magnetic switching volume from a single set of measurements.
Christopher Stark is positioning a FePt:C sample for measurement in the alternating gradient force magnetometer.
Student Jason Levin-Koopman and Prof. Andrew Kunz from Lawrence University