Synthesis and investigation of (Hg1-xCux)Ba2Ca2Cu3 O8+δ

K. A. Lokshin, D. A. Pavlov, M. L. Kovba, S. N. Putilin, E. V. Antipov, I. Bryntse

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5 Citations (Scopus)

Abstract

A reproducible synthesis method for superconducting HgBa2Ca2Cu3O8+δ (Hg-1223) has been developed, using sealed silica tubes and a CoO/Co3O4 mixture as oxygen getter to achieve a controlled partial pressure of oxygen. Samples containing more than 95% of Hg-1223 were prepared with this technique. A significant range of substitution of Cu for Hg was revealed by EDS analysis in samples synthesized at 900°C. After post-anneal in oxygen the lattice parameters were calculated from XRD data and Tc was determined to be 135 K, by susceptibility methods. We suggest that a high synthesis temperature and a low partial pressure of mercury promote substitution in the Hg-1223 phase.

Original languageEnglish
Pages (from-to)263-269
Number of pages7
JournalPhysica C: Superconductivity and its Applications
Volume366
Issue number4
DOIs
Publication statusPublished - 1 Feb 2002
Externally publishedYes

Keywords

  • Substitution of copper for mercury
  • Synthesis of Hg-1223

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