Growth of Hg0.8Pb0.2Ba2Ca2Cu3O 8+δ thick films on Ag using a modified process route

Jianhua Su, P. V.P.S.S. Sastry, Justin Schwartz

Research output: Contribution to journalConference article

2 Scopus citations

Abstract

Thick films of Hg0.8Pb0.2Ba2Ca2Cu3O 8+δ (HgPb1223) superconductor were fabricated by dip-coating Pb0.2Ba2Ca2Cu3O7+δ precursor onto Ag and subsequently reacting in Hg vapor to form the superconducting phase. It was found that by "burying" the films in precursor powder during the reaction, increased HgPb1223 phase purity and increased size of aligned grain colonies were obtained. Such microstructural improvements lead to wider magnetization hysteresis. The optimum superconducting transition temperatures of 133 K were observed in these films. The results showed that this process has a positive influence on the formation and growth of HgPb1223. A pre-pressing process enabled the growth of HgPb1223 grains with relatively dense microstructure and improved connectivity. The resulting films exhibited a transport Jc value of at least 1.5 × 103 A/cm2 at 4.2 K in a zero magnetic field.

Original languageEnglish (US)
Pages (from-to)3118-3121
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume11
Issue number1 III
DOIs
StatePublished - Mar 1 2001
Event2000 Applied Superconductivity Conference - Virginia Beach, VA, United States
Duration: Sep 17 2000Sep 22 2000

All Science Journal Classification (ASJC) codes

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

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