205Tl NMR spin echo investigations in multiphase Tl-Ba-Ca-Cu oxide superconductors

K. Tompa, I. Bakonyi, P. Bánki, I. Furó, S. Pekker, J. Vandlik, G. Oszlányi, L. Mihály

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Multiphase oxide superconductors of nominal compositions Tl2BaCa2Cu3Ox have been synthesized and characterized by resistivity and magnetic susceptibility measurements. NMR spin echoes of both thallium isotopes (203Tl and 205Tl) have been detected and the line shifts, the spin-lattice and spin-spin relaxation times have been measured at room temperature for the more abundant 205Tl nuclei. The temperature dependence of the spin-lattice relaxation rate is also reported. The results suggest that, similarly to the behavior of Y in YBa2Cu3O7 oxides, Tl has a small electronic density of states at the Fermi level in the Tl-Ba-Ca-Cu oxide superconductors.

Original languageEnglish
Pages (from-to)486-490
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume152
Issue number5
DOIs
Publication statusPublished - Jul 1 1988

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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