Transport and magnetic properties of Sm-substituted BISCCO (2223) superconductors (Bi1.7Pb0.3Sr2Ca2-xSmxCu3Oy)

K. Nanda Kishore, S. Satyavathi, M. Muralidhar, V. Hari Babu, O. Peña

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3 Citations (Scopus)

Abstract

The transport and magnetic properties of Bi1.7Pb0.3Sr2Ca2-xSmxCu3Oy (0 ≤ x ≤ 2.0) have been studied. The X-ray diffraction (XRD) suggests that the (2223) phase degrades with Sm substitution and the compounds with x > 0.05 show only the (2212) phase. The (2212) phase is maintained till x=2.0. The d.c. resistivity and a.c. susceptibility measurements show that Tconset and Tc(0)'s decrease with increasing Sm content. The results can be explained on the basis of granular superconductivity. The d.c. magnetization measurements performed on the compounds reveal that with increasing Sm concentration, the superconducting volume and the lower critical field decrease. The thermoelectric power (TEP) measurements reveal that with increasing Sm content, the hole carrier concentration decreases. The XRD, d.c. resistivity, a.c. susceptibility, d.c. magnetization and TEP results are presented and compared with earlier results on Gd- and Y-substituted BISCCO (2223) system.

Original languageEnglish
Pages (from-to)1519-1520
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume235-240
Issue numberPART 2
DOIs
Publication statusPublished - 1994 Dec

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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