Abstract
Abstract We report on reversible dc magnetization data of the YBa2Cu3O7-δ, YBa2Cu2.97Zn0.03O7-δ, YBa2Cu2.97Mg0.03O7-δ and YBa2Cu2.97Ni0.03O7-δ single crystals with the aim of studying the contribution of the divalent chemical doping on the diamagnetic thermodynamic fluctuations (DTF) of the YBa2Cu3O7-δ. The dc zero field cooled [MZFC(T)] and field cooled cooling [MFCC(T)] diamagnetic magnetizations were measured with a SQUID magnetometer. The DTF behavior of our samples was interpreted in light of the 3D lowest Landau level formalism (3D-LLL). The results highlight that the amount of the Cu partially substituted individually for Zn, Mg or Ni in the YBa2Cu3O7-δ structure do not change the 3D character of its vortices dynamics. In addition, they show an increase in the temperature range dominated by 3D-DTF of ours doped single crystals. This increase could be connected to the intensification of their inhomogeneous superconducting state due to the chemical doping.
Sign-in/Register to access full text options 
Free) 
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 call
