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, ‡}

(a) The XRD pattern and the Rietveld refinement result of Ba_0.8Sr_0.2FeO^2.81, where black circle and red line represent the observed and fitted data, respectively. Bottom blue line represents their difference,and pink ticks denote allowed Bragg reflections; (b) TG measurement result of Ba_0.8Sr_0.2FeO^2.81.