Spin glassy behavior and large exchange bias effect in cubic perovskite Ba0.8Sr0.2FeO3-δ

Spin glassy behavior and large exchange bias effect in cubic perovskite Ba_0.8Sr_0.2FeO_3-δ

Liu Yu-Xuan^{1, 2}, Liu Zhe-Hong^{2, 3}, Ye Xu-Bin^{2, 3}, Shen Xu-Dong^{2, 3}, Wang Xiao^{2, 3}, Zhou Bo-Wen^{2, 3}, Zhou Guang-Hui^{1, †}, Long You-Wen^{2, 4, ‡}

Plots of AC magnetization versus temperature, measured between 2 K and 100 K for Ba_0.8Sr_0.2FeO^2.81. The upper-left inset shows enlarged view for the shift. Bottom right inset shows fitting by using critical slowing down model as described in the text.