Pinning Enhancement by Heterovalent Substitution in Y$_{1-x}$RE$_{x}$Ba$_{2}$Cu$_{3}$O$_{7-δ}$

Details Pinning Enhancement by Heterovalent Substitution in Y$_{1-x}$RE$_{x}$Ba$_{2}$Cu$_{3}$O$_{7-δ}$ Pinning Enhancement by Heterovalent Substitution in Y$_{1-x}$RE$_{x}$Ba$_{2}$Cu$_{3}$O$_{7-δ}$

2008-03-06

arxiv.org/abs/0803.0795v3

Supercond. Sci. Technol. 21 085015 (4pp) 2008

Physics

Condensed Matter

Superconductivity

11 pages, 6 figures, will be published in SUST

Scientific paper

10.1088/0953-2048/21/8/085015

The intragrain pinning in high-$T_c$ superconductor compounds Y$_{1-x}$RE$_{x}$Ba$_{2}$Cu$_{3}$O$_{7-\delta}$ with low concentration of RE (La, Ce, Pr) was investigated. Magnetic and transport measurements reveal that the pinning is maximal for the concentration of heterovalent RE such that the average distance between the impurity ions in the plane of rare-earth elements close to the diameter of Abrikosov vortices in YBCO.

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