NEUTRON-DIFFRACTION STUDY OF DYAG IN HIGH MAGNETIC-FIELD

We have performed neutron diffraction experiments in high magnetic fie lds up to 13 T on DyAg to investigate the complicated magnetic structu res, which has multi-stepwise jumps in the magnetization curve, for in stance, at H-c1 = 7.4 T and H-c2 = 10.2 T for H parallel to the [001] crystal axis. Several models were proposed according to the magnetizat ion measurement. Our results, however, clearly found an inconsistency with these models, and we finally obtained two probable models consist ent with the observed diffraction data.