Model calculations for the high-field peak of the fish-tail effect in the magnetostriction of type-II superconductors

Inanir F., Celebi S.

JOURNAL OF ALLOYS AND COMPOUNDS, vol.427, pp.1-4, 2007 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 427
  • Publication Date: 2007
  • Doi Number: 10.1016/j.jallcom.2006.02.051
  • Journal Name: JOURNAL OF ALLOYS AND COMPOUNDS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1-4
  • Karadeniz Technical University Affiliated: Yes

Abstract

We have aimed to describe the peak-effect observed in various magnetostriction experiments of type-II superconductors in the framework of critical-state models. A Gaussian term added to the exponential model and a Lorentzian term added to the Kim model for the field dependences of critical current density were employed in the calculations. The equations were solved numerically to obtain flux profiles inside a superconducting sample and thus to form the curves of magnetostriction versus applied field. The exponential model was also employed to reproduce the magnetostriction measurements performed on a single crystal 2H-NbSe2 carried out by Eremenko et al. [Low Temp. Phys. 27 (2001) 305]. (c) 2006 Elsevier B.V. All rights reserved.