Abstract
We investigated the pinning and transport properties of samples with nominal compositionsMoSnxSr2YCu2O8 − δ (x = 0 and 0.03) as a function of the temperature and magnetic field. It was establishedthat Mo-1212 is a highly anisotropic superconductor with the formationof 2D vortices. The Sn doping increases the anisotropy and modifies theintergrain superconductivity of Mo-1212. The temperature dependences of theresistivity of the undoped and Sn-doped Mo-1212 were described by the relationρ(T) = (ρ0/T)exp(−U/kBT). The fit to this relation indicates the temperature range of applicationof the flux-creep approximation. We determined the penetration depthλ, the coherencelength ξ and theattempt frequency ν0 of Mo-1212. The field dependences of the parametersρ0 andU denoted the presence of a crossover field. Some interpretations of the latter field, aswell as the nonlinear electric field versus current density characteristics, werediscussed.
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.
