Temperature and Magnetic Field-Induced Spin Reorientation in Rare-Earth Perovskite ErFe0.75Cr0.25O3

We report the synthesis of a single-phase rare-earth perovskite ErFe0.75Cr0.25O3 polycrystalline and its magnetic properties. A transition occurs at temperature T N = 120 K below which we observe a weak magnetic moment from the canted antiferromagnetism. Interestingly, ErFe0.75Cr0.25O3 reveals the compensation-like behavior at T comp−like = 27 K, where the net magnetic moments of transition-metal ions are antiparallel and equal to the induced net moment of Er3+ ions, and the paramagnetic contribution of Er3+ moment presenting a nonzero magnetization. The temperature-dependent magnetization measurement shows a spin reorientation transition from Γ4 to Γ1 at 6 K. Furthermore, it is also observed that there is a spin-flop transition at low temperature induced by external magnetic field in Γ1 state (antiferromagnetic state). The interaction between (Fe/Cr)-3d and Er-4f electrons drives an extremely interesting spin reorientation transition which is highly sensitive to magnetic field and temperature.