Influence of low-level Pr substitution on the superconducting properties of YBa2Cu3O7-delta single crystals

TL;DR

This study investigates how low-level Praseodymium substitution affects the superconducting properties of YBa2Cu3O7-delta single crystals, focusing on critical fields, current density, and flux pinning.

Contribution

It provides new insights into the effects of Pr substitution on superconducting parameters and flux pinning in YBa2Cu3O7-delta crystals.

Findings

Pr substitution influences critical fields and current density.

Pr affects flux pinning force density and trapped field profiles.

Superconducting properties are sensitive to low-level Pr doping.

Abstract

We report on measurements on Y1-xPrxBa2Cu3O7-delta single crystals, with x varying from 0 to 2.4%. The upper and the lower critical fields, Hc2 and Hc1, the Ginzburg-Landau parameter and the critical current density, Jc(B), were determined from magnetization measurements and the effective media approach scaling method. We present the influence of Pr substitution on the pinning force density as well as on the trapped field profiles analyzed by Hall probe scanning.