Elemental substitution at Tl-site of TlSr2CaCu2O7 superconductor: A review. Issue 11 (1st August 2020)

• Record Type: Journal Article
• Authors: Nur-Akasyah, J.; Ilhamsyah, A.B.P.; Abd-Shukor, R.
• Is Part Of: Ceramics international. Volume 46:Issue 11(2020)Part B
• Page Start: 18413
• Page End: 18418
• Publication Date: 2020-08-01
• Subjects: TlSr2CaCu2O7 -- Ionic radius -- Superconducting transition -- Phase formation -- Hole concentration; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.04.210
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: This review is on the effects of elemental substitutions at the Tl-site of TlSr2 CaCu2 O7 (Tl-1212) superconductor. The objective of this paper was to determine the elements that enhance or suppress the superconducting transition temperature, T c of (Tl1- x M x )Sr2 CaCu2 O7 phase. The elements included in this review were M = Pb, Bi, Cr, V, Re, Zr, In, Er, Gd, Na, K, Rb and Se. The relations between transition temperature and the ionic radius, coordination number, valence state and optimization of the hole concentration of the selected elements were studied. The preparation methods, sintering temperature, Tl-1212 phase and structural stability were also discussed. All alkali metals (K, Na and Rb) suppressed the transition temperature of the Tl-1212 phase. The transition temperature generally decreased linearly with ionic radius except for Cr which showed the highest T c although its ionic radius is smaller.