Abstract
We present a study of the magnetic properties of a single-phase Dy0.2Nd0.8CrO3 compound. Interestingly, a negative exchange bias (EB) effect is observed for a wide range of temperature and, below T = 5 K, a small positive EB is also noticed, which is accompanied by a crossing of the Zero Field Cooling and Field Cooling (ZFC-FC) curves. Moreover, in contrast to many results reported in the literature, we do not verify a magnetic reversal, not even at low magnetic fields. The X-ray magnetic circular dichroism results show clear evidences of a dichroic signal for Cr L2,3 edges at T = 30 K under a magnetic field of H = 4 T. Our results suggest that a ferromagnetic ordering of the Cr3+ and the long-range ordering for the Nd3+ can play an important role in the observation of the positive EB in this compound.
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