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Suppression of magnetic relaxation in a high-temperature superconductor placed near a ferromagnet

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Abstract

The phenomenon of the suppression of magnetic relaxation in a high-temperature superconductor (HTSC) with trapped magnetic flux has been observed when the superconducting sample approached a ferromagnet. It is suggested that the ferromagnet is magnetized in the magnetic field of the sample and, in turn, induces currents in the superconductor, which circulate in a direction opposite to that of the trapped flux current. As a result, the magnetic structure becomes stable with respect to the magnetic flux creep because oppositely directed Lorentz forces can act upon different regions of vortices.

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Authors and Affiliations

  1. Institute of Thermal Physics, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620219, Russia

    B. M. Smolyak & G. V. Ermakov

Authors
  1. B. M. Smolyak
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  2. G. V. Ermakov
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Correspondence to B. M. Smolyak.

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Original Russian Text © B.M. Smolyak, G.V. Ermakov, 2010, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2010, Vol. 36, No. 10, pp. 39–44.

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Smolyak, B.M., Ermakov, G.V. Suppression of magnetic relaxation in a high-temperature superconductor placed near a ferromagnet. Tech. Phys. Lett. 36, 461–463 (2010). https://doi.org/10.1134/S1063785010050214

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  • DOI: https://doi.org/10.1134/S1063785010050214

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