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Superconducting wire subject to synchronous oscillating excitations: Power dissipation, magnetic response, and low-pass filtering

Ruiz, H. S. and Badía-Majós, A. and Genenko, Yuri A. and Rauh, Hermann and Yampolskii, Sergey V. (2012):
Superconducting wire subject to synchronous oscillating excitations: Power dissipation, magnetic response, and low-pass filtering.
In: Appl. Phys. Lett., American Institute of Physics, pp. 112602-1, 100, (11), [Online-Edition: http://dx.doi.org/10.1063/1.3693614],
[Article]

Abstract

Numerical simulations of a type-II superconducting wire subject to an ac transport current and oscillating transverse magnetic field are performed using the theory of the critical state. Time dependent distributions of the current and the density of magnetic flux, the local power dissipation, and cycles of the magnetic moment are displayed. Noticeable inhomogeneous dissipation and field distortions are exposed. Results for hysteretic ac losses are reported too, and significant differences to predictions of available approximate formulae identified. Finally, a distinct low-pass filtering effect intrinsic to the wire’s magnetic response is revealed.

Item Type: Article
Erschienen: 2012
Creators: Ruiz, H. S. and Badía-Majós, A. and Genenko, Yuri A. and Rauh, Hermann and Yampolskii, Sergey V.
Title: Superconducting wire subject to synchronous oscillating excitations: Power dissipation, magnetic response, and low-pass filtering
Language: English
Abstract:

Numerical simulations of a type-II superconducting wire subject to an ac transport current and oscillating transverse magnetic field are performed using the theory of the critical state. Time dependent distributions of the current and the density of magnetic flux, the local power dissipation, and cycles of the magnetic moment are displayed. Noticeable inhomogeneous dissipation and field distortions are exposed. Results for hysteretic ac losses are reported too, and significant differences to predictions of available approximate formulae identified. Finally, a distinct low-pass filtering effect intrinsic to the wire’s magnetic response is revealed.

Journal or Publication Title: Appl. Phys. Lett.
Volume: 100
Number: 11
Publisher: American Institute of Physics
Uncontrolled Keywords: critical current density (superconductivity), magnetic moments, numerical analysis, type II superconductors
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Materials Modelling
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 21 Mar 2012 09:42
Official URL: http://dx.doi.org/10.1063/1.3693614
Identification Number: doi:10.1063/1.3693614
Related URLs:
Funders: Funding of this research by Spanish CICyT and FEDER programs (MAT2008-05983-C03-01 project), DGA grant T12/2011, and Spanish CSIC JAE program is gratefully acknowledged.
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