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

A.A. Dubrovskiy; D.A. Balaev; D.M. Gokhfeld; K.A. Shaykhutdinov; M.I. Petrov; S.I. Popkov; Yu.S. Gokhfeld

arxiv: 0803.0795 · v3 · submitted 2008-03-06 · ❄️ cond-mat.supr-con · cond-mat.mtrl-sci

Pinning Enhancement by Heterovalent Substitution in Y_(1-x)RE_(x)Ba₂Cu₃O_(7-δ)

M.I. Petrov , Yu.S. Gokhfeld , D.A. Balaev , S.I. Popkov , A.A. Dubrovskiy , D.M. Gokhfeld , K.A. Shaykhutdinov This is my paper

classification ❄️ cond-mat.supr-con cond-mat.mtrl-sci

keywords pinningconcentrationdeltaheterovalentabrikosovaverageclosecompounds

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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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Pinning Enhancement by Heterovalent Substitution in Y_(1-x)RE_(x)Ba₂Cu₃O_(7-δ)

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