Abstract
In order to study the flux lines dynamics on melt textured YBaCuO, the AC magnetic susceptibility harmonics were measured with different frequencies and amplitudes of the AC magnetic field. In particular, we focus attention on the frequency effects on the higher harmonics measured at various AC fields. The analysis of the experimental data was performed by comparing them with the results obtained by a critical state picture and by numerical simulations of the diffusion processes of the magnetic field which determine the AC response in the presence of different regimes of flux dynamics. As the frequency changes, a clear nonuniversal temperature dependence appears in the experimental curves. In qualitative agreement with the numerical results obtained by assuming the existence of dissipation processes as a sequence of independent flux creep and flux flow events within a collective pinning framework.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
