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Superconducting regions and Kondo effect of MgB2 formed by implantation of magnesium ions into boron substrate

Trybula, Z.; Kempinska, W.; Andrzejewski, B.; Piekara-Sady, L.; Kaszynski, J.; Trybula, M.; Piekoszewski, J.; Stanislawski, J.; Barlak, M.; Richter, E.

Abstract

The results of investigation of the polycrystalline boron implanted by magnesium and argon plasma pulse treatment are presented. The four-probe electric conductivity measurements and magnetically modulated microwave absorption showed the presence of superconducting islands below the temperature of 25 K. Below T = 23 K we detected the Kondo effect, a logarithmic increase in the resistivity as the temperature is lowered, due to iron impurity.

  • Open Access Logo Acta Physica Polonica A 109(2006)4-5, 657-660

Permalink: https://www.hzdr.de/publications/Publ-9606

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