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Structure, Composition and Superconductivity of High Tc Tl–Ba–Ca–Cu–O System

Published online by Cambridge University Press:  21 February 2011

Yasuhiko Syono ,
Masae Kikuchi ,
Satoru Nakajima ,
Teruo Suzuki ,
Takeo Oku ,
Kenji Hiraga ,
Norio Kobayashi ,
Hideo Iwasaki  and
Yoshio Muto
Yasuhiko Syono
Affiliation:
Institute for Materials Research, Tohoku University, Katahira, Sendai 980
Masae Kikuchi
Affiliation:
Institute for Materials Research, Tohoku University, Katahira, Sendai 980
Satoru Nakajima
Affiliation:
Hachioji Research Center, CASIO Computer, Hachioji 192, Japan
Teruo Suzuki
Affiliation:
Steel Research Center, Nippon Kokan (NKK), Kawasaki 210, Japan
Takeo Oku
Affiliation:
Institute for Materials Research, Tohoku University, Katahira, Sendai 980
Kenji Hiraga
Affiliation:
Institute for Materials Research, Tohoku University, Katahira, Sendai 980
Norio Kobayashi
Affiliation:
Institute for Materials Research, Tohoku University, Katahira, Sendai 980
Hideo Iwasaki
Affiliation:
Institute for Materials Research, Tohoku University, Katahira, Sendai 980
Yoshio Muto
Affiliation:
Institute for Materials Research, Tohoku University, Katahira, Sendai 980
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Abstract

Bulk high Tc superconductors of Tl2Ba2Can−1CunO2n+4 (n=1−4) and TlBa2Can−1CunO2n+3 (n=2−5) were synthesized, and their structures, chemical compositions and superconducting properties were studied by means of X-ray powder diffraction, electron probe microanalysis, transmission electron microscopy, and electrical and magnetic measurements. Superconducting critical temperatures are discussed in terms of average Cu valence and Cu-O bond length within the plane which vary with the number of Cu layers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 156: Symposium M – High Temperature Superconductors: Relationships Between Properties, Structure, and Solid State Chemistry , 1989 , 229
Copyright
Copyright © Materials Research Society 1989

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References

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