Superconducting Properties of Ta Substituted (Tl1-xTax)(BaSr)CaCu2O7. Issue 1 (1st October 2022)

• Record Type: Journal Article
• Authors: Ilhamsyah, A. B. P.; Abd-Shukor, R.; Yazid, Hafizal; Humaidi, Syahrul; Jannah, A. N.
• Is Part Of: IOP conference series. Volume 1258:Issue 1(2022)
• Publication Date: 2022-10-01
• Subjects: Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/1258/1/012003
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract : In this research, the effects of Ta substitution on the Tl-based superconducting materials have been investigated. The standard method of solid-state reaction was applied to prepare the (Tl1-x Tax )(BaSr)CaCu2 O7 superconductors of high temperature with x = 0, 0.4, 0.5 and 0.6. For all samples, temperature dependence measurements versus the electrical resistance demonstrated metallic normal state behavior. The X-ray diffraction measurement indicated coexistence of mixed phase with Tl-1212 as the major phase and Ta2 O5 as an impurity for all substitution samples. A fraction with the highest volume of the Tl-1212 phase in Ta substitution samples is in x = 0.4 (67%), 30% comes from Ta2 O5 and the other 3 % belongs to the Tl-1201. All samples with Ta substitution ( x ≥ 0.4) showed decreased in Tc onset, Tc zero and Tp . The discussion on the effects of Ta2 O5 in the Tl(BaSr)CaCu2 O7 superconductors are also provided.