The study on AC susceptibility and magnetization of high-T-c superconductor Bi-2223 using a critical-state model

Ozogul Ö.

JOURNAL OF SUPERCONDUCTIVITY, cilt.17, sa.4, ss.513-517, 2004 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 17 Sayı: 4
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1023/b:josc.0000041789.37349.98
  • Dergi Adı: JOURNAL OF SUPERCONDUCTIVITY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.513-517
  • Anahtar Kelimeler: AC susceptibility, AC magnetization, Bi-2223 superconductors, critical-state model, CRITICAL-CURRENT-DENSITY, HIGH-TEMPERATURE SUPERCONDUCTORS, FLUX CREEP, FIELD, DEPENDENCE, MOTION
  • Ankara Üniversitesi Adresli: Evet

Özet

The Anderson - Kim model for a granular superconductor was employed to calculate both temperature and magnetic field dependencies of the AC susceptibility of a Bi-2223 superconductor. Moreover, similar calculations were performed for the magnetization. The prediction of the model, including the intergranular and intragranular contribution, for susceptibilities and magnetizations was consistent with experimental data very well by considering the temperature-dependent effective volume fraction. The temperature-dependence of fitting parameters was shown to obey almost quadratic power relation ( 1 - T/T-c)(beta) with beta approximate to 2.