Precursor effects on HgBa2Ca2Cu3O8 formation under high pressure

Q. M. Lin, Z. H. He, Y. Y. Sun, L. Gao, Y. Y. Xue, C. W. Chu

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

The effects of the precursor on the synthesis of HgBa2Ca2Cu3O8+δ(Hg-1233) under high pressure are studied. It was observed that HgCaO2 and Hg-1212 appear in the early stage of the formation of Hg-1223. Through intercalation of BaCuO and CaCuO, HgCaO2 and Hg-1212 can be converted to Hg-1223. We found that the mixing level of Ca- and Cu-ions strongly affects the formation of Hg-1223. The existence of large CaO grains in the precursor will increase the needed synthesis temperature or synthesis time, and impurities may appear. A precursor in which Ca-ions are well reacted with other ions facilities the formation of Hg-1223. We also found that this well-reacted precursor is insensitive to moist air.

Original languageEnglish
Pages (from-to)207-212
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume254
Issue number3-4
DOIs
Publication statusPublished - 1995 Nov 20

All Science Journal Classification (ASJC) codes

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

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