Superconducting properties of Tl1−yPbyCaSr2Cu2O7 : Role of Pb And Oxygen Stoichiometry

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Title:	Superconducting properties of Tl1−yPbyCaSr2Cu2O7 : Role of Pb And Oxygen Stoichiometry
Authors:	Vijayaraghavan, R Rao, C N R
Keywords:	TC Oxygen Stoichiometry monophasic superconducting compositions hole concentration
Issue Date:	Jul-1992
Publisher:	Pergamon-Elsevier Science Ltd
Citation:	Solid State Communications 83(1), 73-76 (1992)
Abstract:	In the Tl1-yPbyCaSr2Cu2O7 system, monophasic superconducting compositions are form in t, range 0.25 < y < 0.60 and the minimum Pb content required to stabilize the tetragonal 1122 phase is about 25%. Maximum T(c) is found when y = 0.5, at which composition the hole concentration is optimal. Metallic compositions of Tl1-yPbyCaSr2Cu2O7 (y = 0.25) and Tl0.75Pb0.25Y1-XCaXSr2Cu2O7 (0.80 ≤ x ≤ 1.0) become superconducting on decreasing the oxygen content by vacuum annealing.
Description:	Restricted Access
URI:	https://libjncir.jncasr.ac.in/xmlui/10572/1134
Other Identifiers:	0038-1098
Appears in Collections:	Research Papers (Prof. C.N.R. Rao)

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