Effects of Quenching on the Superconductive Properties of the YBa2Cu4O8(124) System
Document Type
Article
Publication Date
10-1-1991
Abstract
Samples of YBa2Cu4O8 (124) sintered and slowly cooled in oxygen at ambient pressure were quenched from 400, 600 and 800°C. AC susceptibility measurements show that the superconductive transition of the 124 granular phase remains close to Tc=81 K after quenching. The bulk, intergranular transition shifts to lower temperature as the quenching temperature is raised. The data are consistent with the presence of a small amount of off-stoichiometric 124 material in the grain boundaries having a Tc that is sensitive to qeunch-induced oxygen deficiency. Our interpretation differs from the one given by Graebner et al. (Physica C 173 (1991) 135) but it is supported by their data.
Repository Citation
Maartense, I.,
Sarkar, A. K.,
& Kozlowski, G.
(1991). Effects of Quenching on the Superconductive Properties of the YBa2Cu4O8(124) System. Physica C: Superconductivity and its Applications, 181 (1-3), 25-29.
https://corescholar.libraries.wright.edu/physics/1582
DOI
10.1016/0921-4534(91)90330-2
