Conductivity of YBCO ceramics in a wide range of temperatures and hafnium impurities concentrations

S. V. Savich, A. V. Samoilov, A. L. Samsonik, V. N. Sukhov, K. V. Tiutierieva, A. I. Rusalovich, R. V. Vovk, A. B. Boynik, Alexander Chroneos

Research output: Contribution to journalArticle

Abstract

Conductivity of Hf doped YBa2Cu3O7-δ ceramics was studied in the work. It was shown that introduction of Hf additive leads to increase of amount of scattering effective centers of the normal carriers. Excessive conductivity of the samples studied in a wide temperature range obeys the exponential temperature dependence, and near Tc satisfactorily described by the theoretical model of Aslamazov-Larkin. At the same time the Hf additive leads to significant increase of the temperature range of existence of the pseudogap anomaly in ab-plane.
Original languageEnglish
Pages (from-to)21-26
JournalFunctional Materials
Volume23
Issue number1
DOIs
Publication statusPublished - 2016

Bibliographical note

The full text is available from: http://dx.doi.org/10.15407/fm23.01.021

Keywords

  • excess conductivity
  • 2D-3D crossover
  • coherence length
  • pseudogap
  • doping

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