Effect of Sr substitution on the stability of CuO chains in oxygen and nitrogen annealed YBa2-xSrxCu3O(x = 0.0, 0.50, 1.0) superconducting system

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dc.creatorAnsari, M. A.
dc.creatorAwana, V. P. S.
dc.creatorGupta, Anurag
dc.creatorSaxena, R. B.
dc.creatorKishan, H.
dc.date2003-11-25
dc.date.accessioned2026-07-07T02:54:56Z
dc.date.available2026-07-07T02:54:56Z
dc.descriptionSamples of YBa2-xSrxCu3O7-d (x = 0.0, 0.50, 1.0) series were synthesized by solid-state reaction and first annealed in flowing O2 gas. All samples crystallized in orthorhombic structure, where orthorhombic distortion was found to decrease with an increase in x. Four probe resistivity measurements showed that superconducting transition temperature (Tc) decreases monotonically with x at a rate of dTc/dx = 1.3 K/at%. The sample with x=0 had a Tc = 91 K. The samples were further annealed in flowing N2 gas at 450 0C. The Tc of all samples decreased by nitrogen annealing. Interestingly, the decrease in Tc(x) became nearly three times larger at a rate of dTc/dx = 3.7 K/at%. The sample with x=0 had a Tc = 42 K. We discuss possible reasons and implications of the Tc(x) suppression vis stability of CuO chains. Key words: Y-123, Sr substitution, Superconducting transition
dc.description4 pages including Figs, NCMA-2004, Dept. of Physics, Kurukshetra University, India
dc.identifierhttps://arxiv.org/abs/cond-mat/0311564
dc.identifierhttp://arxiv.org/abs/cond-mat/0311564
dc.identifierProceedings NCMA-2004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/22764
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleEffect of Sr substitution on the stability of CuO chains in oxygen and nitrogen annealed YBa2-xSrxCu3O(x = 0.0, 0.50, 1.0) superconducting system
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