Preparation of c-axis-oriented NdBa2Cu3O7-δ thin films by a sol-gel method with alkoxide and hydroxide solutions

Shinobu Fujihara, Gohki Murakami, Toshio Kimura, Yoshio Masuda

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Superconducting NdBa2Cu3O7-δ (Nd123) thin films were prepared by a sol-gel method. Nd- and Ba-alkoxides and Cu(OH)2 were used as metal sources, and isopropanol and dimethylaminoethanol were used as solvents. Sols were spin-coated on polycrystalline Ag metal substrates, dried at 80°C and finally heated at 800°C, resulting in the formation of single-phase Nd123. The films exhibited preferred orientation along the c-axis after coating two times. However, the orientation was disturbed when the number of coatings increased. This behavior is attributable to the interfacial reaction between the film and the substrate to form liquid phases and/or structural relaxation of the gel film upon heating. Superconducting transition was observed at 90 K after annealing the films in O2 with superconducting: quantum interference device (SQUID) measurements.

Original languageEnglish
Pages (from-to)861-863
Number of pages3
JournalJournal of the Ceramic Society of Japan
Volume107
Issue number9
Publication statusPublished - 1999 Jan 1

Keywords

  • Alkoxide
  • Hydroxide
  • Orientation
  • Sol-gel
  • Superconductor
  • Thin film

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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