Investigations of arsenic substitution on the physical, electrical and magnetic properties of Bi-2212 superconductors

W. Labban, W. Malaeb, K. Habanjar, M. S. Hassan, R. Sakagami, Y. Kamihara, R. Awad

Research output: Contribution to journalArticlepeer-review

Abstract

The effect of Arsenic substitution on the properties of Bi-2212 superconductors was studied. Solid-state reaction technique was used for the synthesis of Bi2−xAsxSr2Ca1.1Cu2.1O8 samples, x = 0, 0.1, 0.2 and 0.4. The X-ray diffraction confirmed the formation of the tetragonal phase of Bi-2212 superconductors. The decrement in the c parameter confirmed that As insertions were introduced into the Bi sites of the system. The grain morphology of the surface was analysed by scanning electron microscopy, where the amount of arsenic increases with As substitution. The superconducting transition temperature (Tc) was determined from the DC-electrical resistivity by the standard four-probe technique. Tc was enhanced up to x = 0.1 above which it was suppressed. For magnetism, half magnetic-hysteresis loops were obtained by SQUID magnetometer at different temperatures (5 and 30 K). The hysteresis loops sizes increased with increasing As-concentrations. The critical current density (Jc) and the flux pinning mechanisms were investigated via different models.

Original languageEnglish
Pages (from-to)1055-1066
Number of pages12
JournalPhase Transitions
Volume93
Issue number10-11
DOIs
Publication statusPublished - 2020 Nov 1

Keywords

  • as substitution
  • Bean’s model
  • Bi-2212 superconductor
  • critical current density
  • flux pinning

ASJC Scopus subject areas

  • Instrumentation
  • Materials Science(all)

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