Magnetic phase diagram of Ho–Ag

The magnetic phase diagram of Ho–Ag has been established using magnetoresistance, magnetostriction and neutron diffraction experiments versus applied field and temperature. Three different magnetic phases were observed: an incommensurate antiferromagnetic phase (IC) below TN = 33 K, a commensurate antiferromagnetic phase (C) above 5 T and below T1 (5–8 K) and a ferromagnetic component above 3 T. The IC phase undergoes spin reorientations around 5 T (IC') and 13 T (IC'').