Preparation of high-Tc superconducting oxide in the Bi-Sr-Ca-Cu-O system by oxalate gel processing

F. H. Chen*, H. S. Koo, Tseung-Yuen Tseng, R. S. Liu, P. T. Wu

*Corresponding author for this work

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

The high-Tc superconducting oxide in the Bi-Sr-Ca-Cu-O system, with superconducting transition temperature at about 80 K, has been fabricated by the sol-gel method using oxalic acid and nitrates as starting materials. Compared to the conventional solid-state reaction method, this chemical technique offers less fabricating time and lower sintering temperature to get a homogeneous superconductor. Thermal analysis, infrared spectra and X-ray diffraction data indicate that the mechanism of decomposition and phase transformation of specimens prepared at various temperatures are greatly different.

Original languageEnglish
Pages (from-to)228-232
Number of pages5
JournalMaterials Letters
Volume8
Issue number6-7
DOIs
StatePublished - 1 Sep 1989

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