Preparation and X-ray characterization of superconducting and related Tl2Ba2CuO6 phases
โ Scribed by T.C. Huang; V.Y. Lee; R. Karimi; R. Beyers; S.S.P. Parkin
- Book ID
- 118349972
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 310 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0025-5408
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Tl-2201 superconductor is discovered by high-resolution time-of-flight neutron and synchrotron X-ray powder diffraction studies of "orthorhombic Tl-2201". Oxygen-rich compositions with Tc values up to 50 K are monoclinic whereas less oxidized samples with Tc values of 50-90 K are orthorhombic (Fmmm)
The structure of the orthorhombic form of T12Ba2CuO6+a( To= 90 K), synthesized in sealed gold tubes using BaO2, has been refined using high resolution neutron powder diffraction data collected at 4 K. No significant deficiency in metal stoichiometry could be inferred from the crystal structure analy