en
Scientific article
English

Recent progress in Chevrel phase syntheses: a new low temperature synthesis of the superconducting lead compound

Published inMaterials Research Bulletin, vol. 29, no. 5, p. 567-574
Publication date1994
Abstract

This paper reviews recent progress in the synthesis of Chevrel phases. The objective was to produce better microscopic homogeneity of the elements and/or precursors required to form the phase. Among these new processes, the one dealing with insertion of lead into the binary Mo₆S₈ compound is particularly attractive for the development of Chevrel phase wire since the phase formation occurs at temperature as low as 440°C. To achieve good microscopic homogeneity of PbMo₆S₈ (PMS), PbS is used and the extra sulfur is removed under a hydrogen gas flow. Basic superconducting properties, like a.c. susceptibility transition and specific heat anomaly at Tc, demonstrate extremely fine super-conducting particles. Further annealing at the moderate temperature of 600°C improves the homogeneity and/or the crystallinity of the powder.

Keywords
  • Chevrel phases
  • Sulfides
  • Lead
Citation (ISO format)
RABILLER, P. et al. Recent progress in Chevrel phase syntheses: a new low temperature synthesis of the superconducting lead compound. In: Materials Research Bulletin, 1994, vol. 29, n° 5, p. 567–574. doi: 10.1016/0025-5408(94)90047-7
Main files (1)
Article (Published version)
accessLevelRestricted
Identifiers
ISSN of the journal0025-5408
356views
0downloads

Technical informations

Creation03/18/2019 12:39:00 PM
First validation03/18/2019 12:39:00 PM
Update time03/15/2023 3:59:53 PM
Status update03/15/2023 3:59:52 PM
Last indexation01/17/2024 5:07:01 AM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack