MAGNETIC-STRUCTURE OF DYAG IN HIGH MAGNETIC-FIELD STUDIED BY NEUTRON-DIFFRACTION

We have carried out neutron-diffraction experiments on the metamagneti c compound DyAg which has two phase transitions at 7.6 T and 10.2 T in a field along the [001] direction. Some models have been proposed acc ording to the magnetization process. By observing the intensity variat ion of magnetic Bragg peaks, we finally reached a unique model, and th is differs from all of the proposed models so far.