Oxygenation and superconductivity of Tl2CaBa2Cu2O8-x
Journal
Physica C: Superconductivity and its applications
Journal Volume
167
Journal Issue
3-4
Pages
267-270
Date Issued
1990
Author(s)
Abstract
Oxygenation of Tl2CaBa2Cu2O8-x between 250°C and 800°C was studied. The curves which plotted the amount of oxygen adsorbed as a function of oxygenation temperature indicated the presence of two oxygen adsorption processes, including one which prevailed at temperature below 400°C and the other between 500°C and 700°C. When the compound was oxygenated consecutively at increasing temperatures, the Tc of the oxide first increased and then decreased, exhibiting a maximum after oxygenation at 400°C. The Tc increased almost linearly with the amounts of oxygen adsorbed below 400°C but showed no unique (one-to-one) correlation with the overall oxygen content of the oxide. © 1990.
SDGs
Type
journal article