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Emission Mössbauer Spectra of Superconducting and Nonsuperconducting YBa2Cu3Oy Doped with 57-Co

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Advances in Superconductivity III

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Abstract

The temperature dependence of the parameters of 57-Co emission Mossbauer spectra reveals remarkable changes near 115 K, 155 K and 240 K. The largest anomaly is observed for the spectral linewidth. The broadening of spectral lines is suggested to be due to the quadrupolar relaxation process with characteristic fluctuation frequencies comparable with hyperfine Mossbauer ones (ω ≈ 107−109 s−1) in the temperature range of 90–130 K. The relation between the observed peculiarities and structural instabilities is discussed.

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Author information

Authors and Affiliations

  1. I.V. Kurchatov Institute of Atomic Energy, Moscow, 123182, USSR

    Sergei S. Yakimov, Valery M. Cherepanov, Michael A. Chuev & Vladimir Ya. Goncharov

Authors
  1. Sergei S. Yakimov
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  2. Valery M. Cherepanov
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  3. Michael A. Chuev
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  4. Vladimir Ya. Goncharov
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Editor information

Editors and Affiliations

  1. Electrotechnical Laboratory, Umezono, Tsukuba 305, Japan

    Koji Kajimura

  2. School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464, Japan

    Hisao Hayakawa

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© 1991 Springer-Verlag Tokyo

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Yakimov, S.S., Cherepanov, V.M., Chuev, M.A., Goncharov, V.Y. (1991). Emission Mössbauer Spectra of Superconducting and Nonsuperconducting YBa2Cu3Oy Doped with 57-Co. In: Kajimura, K., Hayakawa, H. (eds) Advances in Superconductivity III. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68141-0_38

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  • DOI: https://doi.org/10.1007/978-4-431-68141-0_38

  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-68143-4

  • Online ISBN: 978-4-431-68141-0

  • eBook Packages: Springer Book Archive

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