Improvement of the Intergranular Pinning Energy in the (BiPb)(2)Sr2Ca2Cu3O10+delta Superconductors Doped with High Valancy Cations

Yazici D., Erdem M., ÖZÇELİK B.

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, vol.25, no.4, pp.725-729, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 4
  • Publication Date: 2012
  • Doi Number: 10.1007/s10948-011-1331-1
  • Journal Name: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.725-729
  • Keywords: High-T-c superconductors, Magnetoresistance, Pinning energy, Flux pinning, HIGH-TEMPERATURE SUPERCONDUCTORS, ACTIVATED FLUX-CREEP, EASY VORTEX MOTION, MAGNETIC-FIELD, GD(BA2-XPRX)CU3O7+DELTA SYSTEM, DISSIPATION MECHANISM, TRANSPORT-PROPERTIES, CRITICAL CURRENTS, THIN-FILM, TRANSITION
  • Çukurova University Affiliated: Yes

Abstract

In the present work, Bi-Pb-V-Sr-Ca-Cu-Ti-O bulk samples with nominal composition (BiPb)(2)V (x) Sr2Ca3Cu4-y Ti (y) O12+delta with x=0.1 and y=0.050, 0.10, 0.2, and 0.3 have been prepared by the melt-quenching method. The magnetoresistance of the samples has been measured for different values of the applied magnetic field. The thermally activated flux creep model has been studied in order to calculate the flux pinning energies. The flux pinning energies calculated increase with increasing Ti-content, and decrease with applied magnetic field.

In the present work, Bi-Pb-V-Sr-Ca-Cu-Ti-O bulk samples with nominal composition (BiPb)(2)V (x) Sr2Ca3Cu4-y Ti (y) O12+delta with x=0.1 and y=0.050, 0.10, 0.2, and 0.3 have been prepared by the melt-quenching method. The magnetoresistance of the samples has been measured for different values of the applied magnetic field. The thermally activated flux creep model has been studied in order to calculate the flux pinning energies. The flux pinning energies calculated increase with increasing Ti-content, and decrease with applied magnetic field.