Finite-element simulations of hysteretic alternating current losses in a magnetically coated superconducting tubular wire subject to an oscillating transverse magnetic field

Numerical simulations of hysteretic ac losses in a tubular superconductor/paramagnet heterostructure subject to an oscillating transverse magnetic field are performed within the quasistatic approach, calling upon the COMSOL finite-element software package and exploiting magnetostatic-electrostatic a...

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Bibliographic Details
Published inJournal of applied physics Vol. 117; no. 24
Main Authors Genenko, Y. A., Rauh, H., Kurdi, S.
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 28.06.2015
Subjects
Applied physics
Computer simulation
Current loss
Electrostatic shielding
Heterostructures
Hysteresis
Magnetic fields
Magnetic permeability
Magnetic shielding
Magnetism
Superconductivity
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Summary:Numerical simulations of hysteretic ac losses in a tubular superconductor/paramagnet heterostructure subject to an oscillating transverse magnetic field are performed within the quasistatic approach, calling upon the COMSOL finite-element software package and exploiting magnetostatic-electrostatic analogues. It is shown that one-sided magnetic shielding of a thin, type-II superconducting tube by a coaxial paramagnetic support results in a slight increase of hysteretic ac losses as compared to those for a vacuum environment, when the support is placed inside; a spectacular shielding effect with a possible reduction of hysteretic ac losses by orders of magnitude, however, ensues, depending on the magnetic permeability and the amplitude of the applied magnetic field, when the support is placed outside.
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ISSN:0021-8979
1089-7550
DOI:10.1063/1.4922982