Magnetic properties of the semimagnetic semiconductor Zn0.15Mn0.85Ga2Se4

We report on the magnetic measurements of the semimagnetic semiconductor Zn0.15Mn0.85Ga2Se4 (ZMGSe). The DC susceptibility and high magnetic field indicate that the ZMGSe orders antiferromagnetically at T≈6 K and undergoes into a spin-flop phase below this temperature. Arrott plots and magnetic entropy changes were used to characterize the order of the transitions.