Abstract
Magnetization data of a ${\mathrm{Nd}}_{1.85}{\mathrm{Ce}}_{0.15}{\mathrm{CuO}}_{4\ensuremath{-}\ensuremath{\delta}}$ single crystal prepared by the traveling solvent floating zone method reveal a feature showing a sharply defined temperature range for the occurrence of the second-peak effect. A vortex phase diagram derived from these data on the basis of some of the existing models displays a number of perceptible changes in the temperature dependencies of the penetration field ${H}_{p},$ the irrevesibility line ${H}_{\mathrm{irr}},$ and the symmetry of the hysteresis loop, in conjunction with the observation of the peak effect. It is shown that effective penetration of the external magnetic field in the three-dimensional vortex regime is a prerequisite to the transition from its quasilattice to disordered glass vortex state associated with occurence of the peak effect. Comparison with previous results on a similar sample further indicates certain sample-dependent nature of the data.
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.
