<italic>A</italic>-site ordered perovskite CaCu3Cu2Ir2O12−<italic>δ</italic> with square-planar and octahedral coordinated Cu ions

A-site ordered perovskite CaCu₃Cu₂Ir₂O_12−δ with square-planar and octahedral coordinated Cu ions

Zhao Qing^{1, 2}, Yin Yun-Yu², Dai Jian-Hong², Shen Xi², Hu Zhi-Wei³, Yang Jun-Ye², Wang Qing-Tao^{1, 4, †,}, Yu Ri-Cheng², Li Xiao-Dong⁵, Long You-Wen^{2, 6, ‡,}

(a) Temperature dependence of magnetic susceptibility of CaCu₃Cu₂Ir₂O_12−δ measured at zero-field cooling (ZFC) and field cooling (FC) modes with applied field 0.1 T. (b) Field dependence of the magnetization at different temperatures. The unit 1 Oe = 79.5775 A·m⁻¹.