HIGH-T<sub>c</sub>superconductivity in perovskite oxides of the Y─Ba─Cu─O system

R. A. Mohanram; K. Sreedhar; A. K. Raychaudhuri; P. Ganguly; Cnr Rao

doi:10.1080/09500838708214694

HIGH-T<sub>c</sub>superconductivity in perovskite oxides of the Y─Ba─Cu─O system

Philosophical Magazine Letters 55(6): 257-263

Article 1987 English

Abstract

1 min read

Several biphasic compositions of the type Y3−xBa3+xCu6O14 show an onset of superconductivity in the 90-115K range, attaining zero resistance in the 70-85K range. The phase responsible for superconductivity in these compositions is a perovskite oxide of composition YBa2Cu3 O7. This oxide annealed in oxygen shows the onset of superconductivity at 120K and zero resistance at 87K. YBa2,Cu3O7 shows the highest Meissner effect of all oxide superconductors. The superconducting behaviour of the two perovskite oxides, Y0.95Ba1.95,Cu3O7 and Y1.05Ba1.95Cu3O7 show interesting features; a marked decrease in resistivity is observed from room temperature itself in the former oxide with zero resistance at 89K. Electron microscopy and infrared spectra of these oxides are briefly discussed.

HIGH-T<sub>c</sub>superconductivity in perovskite oxides of the Y─Ba─Cu─O system

Abstract

Discussion(0)

Related publications

Approaches to the synthesis of High-T<sub>C</sub>superconducting oxides in La–Ba–Cu–O and Y–Ba–Cu–O systems

High-temperature superconductivity in La- and Lu-substituted YBa<sub>2</sub>,Cu<sub>3</sub>,O<sub>7</sub>, and related oxides

Synthesis of Cuprates of Perovskite Structure in the Ba-Pb-Cu-O, Ba-Bi-Cu-O, and Ba-Pb-Tl-Cu-O Systems: Possible High Tc Superconductivity in a Perovskite-like Phase in the Ba-Pb-Tl-Cu-O System

Superconductivity in BiCaYSrCuO (2122) and TlCaYBaCuO (1122) systems: Effect of substitution of Ca by Y

High-T<sub>c</sub> Superconductor Produced by Oxidization of Melt-Spun Ag-Ho-Ba-Cu Alloy Ribbon

Related publications

Article1987
Approaches to the synthesis of High-T<sub>C</sub>superconducting oxides in La–Ba–Cu–O and Y–Ba–Cu–O systems
Article1987

Article1987
High-temperature superconductivity in La- and Lu-substituted YBa<sub>2</sub>,Cu<sub>3</sub>,O<sub>7</sub>, and related oxides
Article1987

Article1994
Synthesis of Cuprates of Perovskite Structure in the Ba-Pb-Cu-O, Ba-Bi-Cu-O, and Ba-Pb-Tl-Cu-O Systems: Possible High Tc Superconductivity in a Perovskite-like Phase in the Ba-Pb-Tl-Cu-O System
Article1994

Article1989
Superconductivity in BiCaYSrCuO (2122) and TlCaYBaCuO (1122) systems: Effect of substitution of Ca by Y
Article1989

Article1988
High-T<sub>c</sub> Superconductor Produced by Oxidization of Melt-Spun Ag-Ho-Ba-Cu Alloy Ribbon
Article1988