Strong correlation between Tc and lattice parameters in Ba2 YCu3Oy

Hideo Ihara, Hiroyuki Oyanagi, Ryoji Sugise, Eizo Ohno, Toshiya Matsubara, Shinichi Ohashi, Norio Terada, Masatoshi Jo, Masayuki Hirabayashi, Keizo Murata, Akira Negishi, Yoichi Kimura, Etsuo Akiba, Hiroshi Hayakawa, Sigemitsu Shin

Research output: Contribution to journalArticlepeer-review


Superconducting properties and lattice parameters were systematically studied for Ba2YCu2Oy (6<y<7) as a function of oxygen content y. The results show that the Tc value and lattice parameter have a strong correlation in a stepwise change with the oxygen content. The lattice parameters of c and (b-a) change stepwisely at y=6.7 and 6.35 like Cu valency. The bond length of Cu-O along the pyramidal height strongly correlates to the Tc value. The distortion of the pyramidal basal plane also has a relation to the Tc value. This paper was reprinted from original source (1988).

Original languageEnglish
Pages (from-to)28-32
Number of pages5
JournalDenshi Gijutsu Sogo Kenkyusho Iho/Bulletin of the Electrotechnical Laboratory
Issue number2
Publication statusPublished - 1989
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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