Funct. Mater. 2013; 20 (4): 457-461.
Effect of praseodymium doping on electroresistivity along c-axis in Y1–xPrxBa2Cu3O7–δ single crystals
[1]V.Karazin Kharkiv National University, 4 Svoboda Sq., 61022 Kharkiv, Ukraine
[2]Ukrainian State Academy of Railway Transport, 7 Feyerbaha Sq., 61050 Kharkiv, Ukraine
In the present study influence of praseodymium doping on conductivity across (transverse) the basal plane of high-temperature superconducting Y1–xPrxBa2Cu3O7–δ single crystals is investigated. It is determined that increase of praseodymium doping leads to increased localization effects and implementation of the metal – insulator transition Y1–xPrxBa2Cu3O7–δ, which always precedes the superconducting transition. The praseodymium concentration increase also leads to significant displacement of the point of the metal – insulator transition to the low temperature region.
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