Abstract
Anomalies have been observed in the magnetization curves of melt-processed polycrystalline YBCO materials containing certain dopants such as Pr and Pt. Such anomalies are not produced, and are even suppressed, by other dopants, such as Nb. The anomaly consists of the appearance of a second, higher-field peak in the irreversible region of the magnetization plot. It can be attributed to uncoupling of flux-pinning centers from the superconducting matrix at high fields. Creep measurements show that the activation energy for flux creep exhibits a maximum at the vicinity of the anomalous second peak.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.