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Systematics of the thermopower below Tcin Tl2Ba2CaCu2O8+δ

✍ Scribed by J. A. Clayhold; C. W. Chu

Book ID
104912262
Publisher
Springer
Year
1995
Tongue
English
Weight
155 KB
Volume
8
Category
Article
ISSN
0896-1107

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We report on the NMR Knight shift of 2°5T1 in Tl2Ba2CaCuzO8\_~ for different ~. Due to the variation of the oxygen content, T c ranges from 85 K up to 105 K. The 2°~T1 spectra consist of two lines, where the main line is due to Tl( l ) in the TiP-layer whereas the defect line corresponds to Tl (2) r

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A new Hg, Tl based superconductor, Hg,,,T1,,,BazCaC'u~08,n. has been synthesized in sealed quartz ampoules at trmpcratures 720-820°C. The structure is similar to that of TI-22 12. TlZBazCaCuz08+,,. \\ith a tetragonal unit cell (u=3.8534(4) -\. ('= 29.385( 5) A. space group 14/mmm). The composition