MRSEC Participants: Chris Moore and Professor James Eckert

MRSEC Faculty Advisor: Dan Dahlberg

An Investigation of Exchange Interactions in AgMn Spin Glasses Using AC Susceptibility

We measure the vertical AC susceptibility of AgMn samples in the spinglass state and compare our results to those obtained by similar experiments on AFM-FM bilayers. The samples are cooled to 4.2 K in a vertical magnetic field. This field is turned off, and the vertical AC susceptibility is measured as a function of horizontal applied field. The observed behavior is similar to that seen in exchange-coupled AFM-FM bilayers.