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.
KeywordsSpin reorientation Rare-earth perovskite Spin-flop transition Compensation-like behavior
This work is supported by the National Natural Science Foundation of China (NSFC, Nos. 51372149, 51672171, and 11574194), the National Key Basic Research Program of China (Grant No. 2015CB921600), Eastern Scholar Program from Shanghai Municipal Education Commission, and the Science and Technology Commission of Shanghai Municipality (No. 16DZ2260600).
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