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Structure of TlSr2PrCu207−x by Rietveld analysis

Published online by Cambridge University Press:  10 January 2013

Hoong-Kun Fun ,
Ping Yang ,
Rusli Othman ,
Tsong-Jen Lee ,
Chiou-Chu Lai  and
Huan-Chiu Ku
Hoong-Kun Fun
Affiliation:
School of Physics, Universiti Sains Malaysia, USM 11800 Penang, Malaysia
Ping Yang
Affiliation:
School of Physics, Universiti Sains Malaysia, USM 11800 Penang, Malaysia
Rusli Othman
Affiliation:
Intel Technology Sdn. Bhd., 11900, Penang, Malaysia
Tsong-Jen Lee
Affiliation:
Department of Physics, National Tsinghua University, Hsinchu, 30043, Taiwan
Chiou-Chu Lai
Affiliation:
Institute of Electronics, National Chiaotung University, Hsinchu, 30039, Taiwan
Huan-Chiu Ku
Affiliation:
Department of Physics, National Tsinghua University, Hsinchu, 30043, Taiwan
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Abstract

The crystalline structure of new TlSr2PrCu207−x was obtained at room temperature (300 K) and low temperature (100 K) from X-ray powder diffraction with CuKα radiation using Rietveld analysis. TlSr2PrCu207−x has an isotypical structure with TlBa2CaCu207 (1212). At 300 K, crystal data: Tl0.864Sr2PrCu2O6.75, Mr=727.811, the tetragonal system, P4/mmm, a =3.85404(5) Å, c = 12.1046(2) Å, V=179.80 Å3, Z=1, Dx =6.7218 g cm−3, μ =1143.922 cm−1 (λ = 1.54051 Å), F(000)=317.0, the structure was refined with 28 parameters to Rwp=5.29%, Rp = 3.65% for 3551 step intensities and Rb=7.40%, Rf=639% for 155 peaks, “goodness of fit” 5=3.05. At 100 K, crystal data: Tl0.858Sr2PrCu2O6.61, Mr=724.345, the tetragonal system, P4/mmm, a =3.84872(6) Å, c = 12.0771(3) Å, V=178.89 Å3, Z=1, Dx=6.7235 g cm−3, μ=1146.939 cm−1 (λ= 1.54051 Å), F(000) = 315.4, the structure was refined with 26 parameters to Rwp=6.70%, Rp=5.11% for 2926 step intensities and Rb=7.83%, Rf=6.70% for 131 peaks, “goodness of fit” S = 1.75.

Keywords

Rietveld analysispowder diffractionhigh-Tc materialcrystalline structure
Type
Research Article
Information
Powder Diffraction , Volume 9 , Issue 3 , September 1994 , pp. 194 - 199
Copyright
Copyright © Cambridge University Press 1994

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