Preparation of pure Tl2Ba2CuO6±x: The contribution of phase equilibrium studies
✍ Scribed by J.L. Jorda; T.K. Jondo; R. Abraham; M.T. Cohen-Adad; C. Opagiste; M. Couach; A. Khoder; F. Sibieude
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 553 KB
- Volume
- 205
- Category
- Article
- ISSN
- 0921-4534
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We report the growth of millimetre-sized single crystals of Tl 2 Ba 2 CuO 6+x by a copper-rich self-flux technique. The crystals were annealed under controlled oxygen partial pressures and characterized. The interplay of oxygen non-stoichiometry, orthorhombicity, Cu substitution on the Tl site, and
Reasonably large crystals (several mm size) of T12Ba2CuO 6 (referred as "1"1-2201) were grown by a self-flux technique. T o's were altered by annealing the crystals in different atmospheres and at different temperatmes. As the oxygen content increased, the T c decreased from 90 K to 0 K. The anisotr