Preparation of superconducting YBa2Cu4O8 by the sol-gel method

Shinobu Fujihara, Haoren Zhuang, Toshinobu Yoko, Hiromitsu Kozuka, Sumio Sakka

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Superconducting YBa2Cu4O8 ceramics were synthesized by the sol-gel method using corresponding metal acetates as starting materials, water as solvent, and tartaric acid under 1 atm oxygen pressure. YBa2Cu4O8 powder was obtained as a single phase by heating the gel at 780°C for 30 h in flowing oxygen. Tc was 80 K from magnetic susceptibility measurements. Pelletizing and sintering this powder revealed Tc (onset) of 87 K and Tc (end) of 78 K from resistance measurements. YBa2Cu4O8 pellets sintered at 780°C for 30 h in O2 also consist of a single phase with Tc (onset) of 85 K and Tc (end) of 75 K.

Original languageEnglish
Pages (from-to)2355-2359
Number of pages5
JournalJournal of Materials Research
Volume7
Issue number9
Publication statusPublished - 1992 Sep
Externally publishedYes

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Powders
Sol-gel process
gels
Oxygen
Pelletizing
preparation
oxygen
Magnetic susceptibility
pellets
acetates
sintering
Acetates
Sintering
Gels
Metals
ceramics
magnetic permeability
Heating
acids
heating

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Fujihara, S., Zhuang, H., Yoko, T., Kozuka, H., & Sakka, S. (1992). Preparation of superconducting YBa2Cu4O8 by the sol-gel method. Journal of Materials Research, 7(9), 2355-2359.

Preparation of superconducting YBa2Cu4O8 by the sol-gel method. / Fujihara, Shinobu; Zhuang, Haoren; Yoko, Toshinobu; Kozuka, Hiromitsu; Sakka, Sumio.

In: Journal of Materials Research, Vol. 7, No. 9, 09.1992, p. 2355-2359.

Research output: Contribution to journalArticle

Fujihara, S, Zhuang, H, Yoko, T, Kozuka, H & Sakka, S 1992, 'Preparation of superconducting YBa2Cu4O8 by the sol-gel method', Journal of Materials Research, vol. 7, no. 9, pp. 2355-2359.
Fujihara, Shinobu ; Zhuang, Haoren ; Yoko, Toshinobu ; Kozuka, Hiromitsu ; Sakka, Sumio. / Preparation of superconducting YBa2Cu4O8 by the sol-gel method. In: Journal of Materials Research. 1992 ; Vol. 7, No. 9. pp. 2355-2359.
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