The resistivity vs. temperature relation in bulk ceramic HTSC under self-field conditions as well as in weak external magnetic fields is modelled by local Lorentz force induced fluxon motion with temperature dependent pinning. A pinning force density and two viscous drag coefficients in intergrain and intragrain regions, respectively, can be used as characteristic parameters describing the temperature, current, and external field dependences of the sample resistance.
@article{arxiv.cond-mat/9707165,
title = {Characterisation of HTSC ceramics from their resistive transition},
author = {Torsten Henning and H. Kliem and A. Weyers and W. Bauhofer},
journal= {arXiv preprint arXiv:cond-mat/9707165},
year = {2009}
}
Comments
12 pages, LaTeX2e, 6 figures (epsfig), to be published in Supercond. Sci. and Technol