Reversals of magnetization and exchange-bias in perovskite chromite YbCrO3

• Reversals of magnetization and exchange bias field were observed in YbCrO3.
• The normalized magnetization is linear with the normalized magnetization shift.
• The reversals are due to the interaction between the canted Cr3+ and Yb3+ moments.

Reversals of magnetization and exchange bias field were observed around 19 K in polycrystalline perovskite chromite YbCrO3. Both the reversals can be elucidated based on the antiferromagnetic interaction between the ferromagnetic component of Cr3+ moments and the Yb3+ moments. The low field magnetization exhibits a perfect linear correlation with the magnetization shift resulted from the exchange bias effect. Distinguished from other exchange bias systems, the dependence of HE at 10 K on the cooling field shows an almost undamped feature up to 85 kOe, indicating the stable exchange bias states in respective temperature region.