High critical current YBCO thick films by TFA-MOD process

Yoshitaka Tokunaga, Hiroshi Fuji, Ryo Teranishi, Junko Shibata, Sigenobu Asada, Tetsuji Honjo, Teruo Izumi, Yuh Shiohara, Yasuhiro Iijima, Takashi Saitoh

Research output: Contribution to journalConference articlepeer-review

25 Citations (Scopus)

Abstract

As a method of the fabrication processes of YBa2Cu 3O7-x (YBCO), the metalorganic deposition (MOD) process using metal trifluoroacetete (TFA) is considered to be a strong candidate due to its low cost fabrication process for coated conductors with high J c. In our previous work, a triple coated film with 1 μm in thickness was fabricated on a CeO2/IBAD-YSZ layer buffered Hastelloy substrate by optimizing the condition of heat treatments such as P H2O in the multi-coating method [Physica C 378-381 (2002) 1013]. The Jc value of 1.6 MA/cm2 (77 K in self-field) in this film patterned 100 μm width and the I*c value of 153 A/cm-width at 77 K in self-field were achieved. In order to obtain a thicker film with high overall I*c for 1 cm width, the influence of the heat treatment conditions of PH2O, PO2, and the temperature in the MOD process was investigated. Subsequently, a 5 times coated film was obtained on a CeO2/IBAD-Zr2Gd2O7 layer buffered Hastelloy substrate by optimizing the conditions of heating and dip coating. As a result, the overall transport Ic value was improved to 210 A and Jc value of 1.53 MA/cm2 was obtained (77 K in self-field).

Original languageEnglish
Pages (from-to)909-912
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume392-396
Issue numberPART 2
DOIs
Publication statusPublished - Oct 1 2003
Externally publishedYes
EventProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
Duration: Nov 11 2002Nov 13 2002

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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