Rietveld Refinement of the Structure of TlSr2CaCu2O7 by X-Ray Powder Diffraction Data
- 1 January 1990
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 29 (1A) , L57
- https://doi.org/10.1143/jjap.29.l57
Abstract
Single phase TlSr2CaCu2O7 was synthesized, and the crystal structure was refined from X-ray powder diffraction data using Rietveld analysis. The structure has single Tl-O sheets and tetragonal symmetry (a=3.7859 Å, c=12.104 Å) with space group P4/mmm, and is similar to TlBa2CaCu2O7 and Tl0.5Pb0.5Sr2CaCu2O7 (1212 type). Possible substitution of about 14% of Ca-sites with Tl ions was suggested.Keywords
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