Vortex System Dynamics upon Pulsed Magnetization of a HTS

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 va...

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Bibliographic Details
Published in:Physics of atomic nuclei 2019-12, Vol.82 (11), p.1460-1465
Main Authors: Moroz, A. N., Maksimova, A. N., Kashurnikov, V. A., Rudnev, I. A.
Format: Article
Language:English
Subjects:
Comparative analysis
Defects
Demagnetization
Magnetic fields
Magnetic flux
Magnetism
Magnetization
Materials and Technologies for New Power Sources
Particle and Nuclear Physics
Physics
Physics and Astronomy
Pulse amplitude
Superconductors
System dynamics
Trapping
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Summary: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.
ISSN:1063-7788
1562-692X
DOI:10.1134/S1063778819110140