MAGNETIC STATE OF DY3CO

Using data on magnetization, magnetoresistance, a.c. susceptibility an d specific heat, magnetic phase diagrams of the compound Dy3Co were ob tained for the main crystallographic axis. The different antiferromagn etic (AF) structures exist below T-N=44 K: AF(t) exists at T < T-t= 32 K and AF(2) exists at the temperatures T-t < T < T-N. The field-induc ed magnetic phase transitions observed along the three main axes are a ssociated with a complex non-collinear antiferromagnetic structure and are accompanied by a significant change in the electrical resistivity (Delta p/p up to - 40%) owing to the appearance or disappearance of t he energy gaps on superzone boundaries. At the phase transitions along a- and c-axes, large hysteresis loops are observed at low temperature s. At T < 4 K the single crystal of Dy3Co remains in a magnetized stat e after the application and removal of a magnetic field along the c-ax is.