Magnetization of Gd diffused YBa2Cu3O7-x superconductor: Experiment and theory


İNANIR F. , Yildiz Ş., Ozturk K., Çelebi S.

CHINESE PHYSICS B, vol.22, no.7, 2013 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 7
  • Publication Date: 2013
  • Doi Number: 10.1088/1674-1056/22/7/077402
  • Title of Journal : CHINESE PHYSICS B

Abstract

The magnetization of Gd diffused YBa2Cu3O7-x is measured by a vibrating sample magnetometer (VSM) at selected temperatures (5, 25, 50, 77 K). The experimental results for the magnetization are analyzed in the critical state framework involving Kim-Anderson field dependence J(c)(H) = J(c0)/(1 + vertical bar H vertical bar/H-0)(n) of critical current density and equilibrium magnetization M-eq. It is found that the inclusion of the equilibrium magnetization becomes more important at higher temperatures. At 77 K, the shape of the isothermal M-H hysteresis curve is governed by the equilibrium magnetization. Some superconducting parameters are determined by fitting the calculated curves to the experimental data.