Structure of the New T1Ba2PrCu2O7-χ by Rietveld Analysis

Tsong-Jen Lee；Hoong-Kun Fun；Arlohun Wang；Cheng-Hung Ghou；Chiou-Chu Lai；H. C. Ku

Chinese Journal of Physics

31卷6S期（1993 / 12 / 01）

1255 - 1260

英文

The crystalline structure of new TlBa2PrCu2O7-y was obtained at room temperature from X-ray powder diffraction with CuKα radiation using Rietveld analysis. TlBa2PrCu2O7-x is semiconducting at room temperature with a TlBa2CaCu2O7 type (1212) structure (space group P4/mmm) and cell parameters a = 3.91836(3) Å, c = 12.5498(2) Å. The structure was refined for 15 parameters to Rwp, = 6.89 %, Rp = 5.09 % for 6323 st ep intensities and Rb = 13.24 % for 138 reflections.