Exchange bias driven by the structural/magnetic transition in Mn-doped SrRuO3

Magnetic properties of bulk polycrystalline Mn-doped SrRu1−xMnxO3 perovskite, at doping range 0.2≤x≤0.3, were studied by both magnetization and ac-susceptibility measurements. It was found that the exchange bias (EB) effect emerges with increasing Mn doping in SrRu1−xMnxO3 at x≈0.25, following the ferromagnetic (FM) to antiferromagnetic (AFM) phase transition. This transition is accompanied with the change in structure symmetry and then the EB field, HEB, increases significantly in doping range 0.25