Simple synthesis of bulk YBa2Cu4O8 using copper iodide and bromide

X. G. Zheng, H. Kuriyaki, K. Hirakawa

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1 Citation (Scopus)


We present a solid-state reaction method for simply synthesizing high-Tc superconductor YBa2Cu4O8 (Y-124) without the use of high-pressure oxygen, catalyst or sophisticated heat treatment. This technique is characterized by using cuprous iodide or bromide in place of the conventionally used copper oxide. Tc (zero-resistance) of 77 K and 68 K are obtained for samples using copper iodide and bromide, respectively. For the sample synthesized by use of CuI, X-ray diffraction spectrum suggests a single Y-124 phase. The magnetic susceptibility measurement shows a superconducting transition temperature of 83 K, which is characteristic of the Y-124 superconductor.

Original languageEnglish
Pages (from-to)1601-1602
Number of pages2
JournalSynthetic Metals
Issue number1-3
Publication statusPublished - Apr 1 1995

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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