Calculation of rf magnetic permeability of nearly ferroelectric superconductors in a parallel field

Chien Jang Wu, Hsiu Li Lee, Wei Ching Chuang

Research output: Contribution to journalArticle

Abstract

The complex rf magnetic permeability over(μ, ̃) = μ - j μ of nearly ferroelectric superconductors in the Meissner-like response is theoretically investigated based on the electrodynamics of the nearly ferroelectric superconductors. The complex rf magnetic permeability is calculated and analyzed for a superconducting slab in a parallel applied magnetic field. It is found that the peak of the loss curve (curve of imaginary part, μ″) occurs at some critical thickness, which is frequency-dependent, decreasing as the frequency is increased. In addition, the magnitude in peak is strongly depressed as the frequency is increased. This critical thickness is also dependent on the damping factor appearing in the dielectric function, increasing with decreasing the damping coefficient. As for the frequency-dependent μ″ we find that it increases with increasing the frequency, showing a strong dispersion in the imaginary part of the complex permeability.

Original languageEnglish
Pages (from-to)70-75
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume453
Issue number1-2
DOIs
Publication statusPublished - 2007 Mar 15

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Keywords

  • Ferroelectric
  • Magnetic permeability
  • Superconductor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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