MOCVD superconducting oxide films

Toshio Hirai, Hisanori Yamane

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

Preparation of high-Tc superconducting oxide films by MOCVD, their films structure and superconducting properties are reviewed from the standpoint of "nano-composites" and "fine-composites". Y-Ba-Cu-O (YBCO) films formed on SrTiO3(100) at 850°C showed a superconducting transition temperature with zero resistivity above 90 K. The maximum critical current density was 2.0×106 A/cm2 at 77.3 K and 0 T, and 6.5×104 A/cm2 at 77.3 K and 27 T. CuO and a-axis oriented YBCO grains were contained in the matrix of c-axis oriented YBCO. A transmission electron microscope observation revealed that inclusions of about 10-30 nm were embedded in the a-b plane of YBCO. MOCVD-YBCO films prepared on MgO(100) were used for superconducting devices. Some studies on the MOCVD films of Bi-Sr-Ca-Cu-O and Tl-Ba-Ca-Cu-O are also reviewed.

Original languageEnglish
Pages (from-to)683-691
Number of pages9
JournalJournal of Crystal Growth
Volume107
Issue number1-4
DOIs
Publication statusPublished - 1991 Jan 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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