Formation Of Infinite-Layered (Ca1-Xsrx) Cuo2 And Nacuo2-Type (Ca1-Ynay)(0.85)Cuo2 In Tartrate Route

Both NaCuO2-type Ca0.85CuO2 and infinite-layered (Ca1-xSrx)CuO2 could be prepared much more easily by firing the dried solids from mixed acetate aqueous solutions titrated with tartaric acid than by normal calcination, The presence of a narrow solid-solution composition range of 0.10 < x < 0.16 was confirmed in infinite-layered (Ca1-xSrx)CuO2 in the preparation using the tartrate route, The calcium could also be substituted by sodium in a range of y < 0.15 in NaCuO2-type (Ca1-yNay)(0.85)CuO2 using the same route, Further substitution of Ca2+ With Y3+ might also be possible in infinite-layered (Ca1-xSrx)CuO2, but resulted in the NaCuO2-type compound in the substitution with Na+.