Abstract
A numerical investigation of the response of a HTS with different numbers of defects to the action of rectangular magnetic field pulses with a varying amplitude is carried out. The time dependences of a magnetic field trapped by the superconductor are calculated at different pulse parameters. The values of the HTS response to pulsed and gradual magnetization and demagnetization of the sample are compared, which reveals that magnetic flux trapping is more efficient under the action of pulses. A feature in the behavior of the vortex lattice acted on by field pulses is established, which relates to correlation between the number of defects and pulse amplitude. Flux trapping is shown to have a maximum dependent on the concentration of defects at each pulse amplitude.
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Funding
The research was carried out under financial support of the Russian Foundation for Basic Research (grant no. 17-29-10024).
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Russian Text © The Author(s), 2019, published in Yadernaya Fizika i Inzhiniring, 2019, Vol. 10, No. 2.
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Moroz, A.N., Maksimova, A.N., Kashurnikov, V.A. et al. Vortex System Dynamics upon Pulsed Magnetization of a HTS. Phys. Atom. Nuclei 82, 1460–1465 (2019). https://doi.org/10.1134/S1063778819110140
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DOI: https://doi.org/10.1134/S1063778819110140