Influence of irradiation on the magnetic properties of Bi-2212 single crystals

Sergei N. Barilo; Valentina I. Gatalskaya; Gennadii V. Gatalskii; Sergei L. Kurockin

doi:10.1117/12.343012

24 March 1999 Influence of irradiation on the magnetic properties of Bi-2212 single crystals

Sergei N. Barilo, Valentina I. Gatalskaya, Gennadii V. Gatalskii, Sergei L. Kurockin

Proceedings Volume 3724, International Conference on Solid State Crystals '98: Single Crystal Growth, Characterization, and Applications; (1999) https://doi.org/10.1117/12.343012
Event: International Conference on Solid State Crystals '98, 1998, Zakopane, Poland

Abstract

Measurements of magnetization versus temperature and magnetic field have been performed on single crystals of Bi₂Sr₂CaCu₂O_y irradiated by fast electrons in temperature range from 4.2 K to 80 K and at magnetic field up to 6T. The critical current density under irradiation by fluence of 2 X 10¹⁸ cm^-2 (E equals 4 MeV) is enhanced by 1.3 times and amounts to 1.3 X 10⁶ Acm^-2 at 4.2 K and zero magnetic field (H (parallel) c). At high temperatures the dependence of the irreversibility field B_irr(T) is described by linear expression. However, at temperature decreasing B_irr increases very abruptly near 20 K - 30 K. For irradiated state the irreversibility line shifts towards higher magnetic fields and B_irr changes drastically near 20 - 25 K. The results can be account for by the model of a crossover from 3D to 2D pinning.

Citation Download Citation

Sergei N. Barilo, Valentina I. Gatalskaya, Gennadii V. Gatalskii, and Sergei L. Kurockin "Influence of irradiation on the magnetic properties of Bi-2212 single crystals", Proc. SPIE 3724, International Conference on Solid State Crystals '98: Single Crystal Growth, Characterization, and Applications, (24 March 1999); https://doi.org/10.1117/12.343012

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