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Journal of Superconductivity and Novel Magnetism

, Volume 25, Issue 2, pp 293–297 | Cite as

Effect of high valency cations on the (BiPb)2Sr2Ca3Cu4O12+δ compounds

  • Duygu Yazici
  • Bekir Ozcelik
Original Paper

Abstract

We have produced the (BiPb)2V x Sr2Ca3Cu4−y Ti y O12+δ compounds by a melt-quenching method. For two different sintering times (185 and 192 hours), the effects of vanadium adding and Ti doping on the structure have been investigated by electrical resistance, scanning electron micrographs (SEM), XRD patterns and magnetic hysteresis loop measurements. It has been found that the high-T c superconducting phase, (2223), is formed in the samples annealed at 845 C for 185 and 192 h, with concentration x=0.2 and y=0.05. However, with increasing Ti doping the (2223) phase gradually transforms into the (2212) phase. The hysteresis loop areas decrease with increasing Ti concentration and sintering time. Our data have indicated that the critical current, J c , decreases with increasing magnetic field.

Keywords

Bi-based cuprates Critical currents Magnetic properties 

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.Department of Physics, Faculty of Sciences and LettersÇukurova UniversityAdanaTurkey

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