A-site ordered perovskite CaCu3Cu2Ir2O12−δ with square-planar and octahedral coordinated Cu ions
Zhao Qing1, 2, Yin Yun-Yu2, Dai Jian-Hong2, Shen Xi2, Hu Zhi-Wei3, Yang Jun-Ye2, Wang Qing-Tao1, 4, †, , Yu Ri-Cheng2, Li Xiao-Dong5, Long You-Wen2, 6, ‡,
       

XRD pattern and the Rietveld refinement profile of CaCu3Cu2Ir2O12−δ. The observed (circles), calculated (red line), and difference (blue line) patterns are shown. The ticks show the positions of the Bragg reflections with space group Im-3. The inset shows the SAED image along the zone axis.