Abstract
The spinels, Cu x Zn1−x Cr2Se4) with x = 0.01, 0.02, 0.025, 0.05, 0.07 have been obtained. For these spinels, as well as for x = 0.0 and 0.1, magnetization measurements were carried out using an induction method in strong, pulsed magnetic fields, in a temperature range of 2.8 K to 30 K. Three magnetic phase transitions were observed. A hypothesis on the magnetic structure of the four phases separated by the three transitions is put forward.