Year: 1987
Type: article
Abstract: The transition temperature, T c, the upper critical field, H c2(T), and the critical current density, J c(H), at 4.2 K have been studied in high-T c Y x Ba1-x Cu-Oxide system. Two maxima in T c around x=0.33 and 0.4 have been observed. The slope dH c2 mid/dT near T c for the sample x=0.4 is -1.5 T/K, resulting in H c2 at 0 K higher than 85 T by an extrapolation according to the WHH theory. Although the J c value of ∼3.5 A/cm2 at 15 T is very low, it decreases only 10% even at 27 T, showing high potential for practical use at high fields when J c is raised by the introduction of strong pinning centers in this material.
DOI: 10.1143/jjap.26.l802
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W1968364552