Neutron diffraction studies of isotope-substituted tetragonal superconductors RBa2Cu2.76Fe0.24O7+o (R=Sm, Y)

Vitali Trunov, Yu Kaganovich, A. Kurbakov, A. Matveev, A. Balagurov, A. Hewat, P. Fischer, Olli Antson, R. Maayouf

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    Abstract

    We report results of neutron diffraction measurements on tetragonal (P4/mmm) Sm zero matrix superconductors (152,154)Sm(0)Ba2Cu2.76Fe0.24O7+δ with Tc in the range 59 to 70 K, and similar YBa2Cu2.76Fe0.24O7+δ samples with Fe and Cu isotopes.
    The investigations were performed in the temperature range 8 to 300 K using three different high resolution diffractometers. Analysis of the measurements shows that Fe is distributed with approximately equal probability between the Cu(1) and Cu(2) positions.
    The temperature dependences of the lattice parameters of the Sm and Y systems showing similar nonlinear variations and no abrupt changes, which might be characteristic of intermediate valence instabilities in Sm, were observed.

    Original languageEnglish
    Pages (from-to)123-130
    JournalPhysica C: Superconductivity and its Applications
    DOIs
    Publication statusPublished - 1992
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Neutron diffraction
    Isotopes
    Superconducting materials
    neutron diffraction
    isotopes
    Diffractometers
    diffractometers
    Lattice constants
    lattice parameters
    valence
    Temperature
    temperature dependence
    high resolution
    matrices
    temperature

    Cite this

    Trunov, Vitali ; Kaganovich, Yu ; Kurbakov, A. ; Matveev, A. ; Balagurov, A. ; Hewat, A. ; Fischer, P. ; Antson, Olli ; Maayouf, R. / Neutron diffraction studies of isotope-substituted tetragonal superconductors RBa2Cu2.76Fe0.24O7+o (R=Sm, Y). In: Physica C: Superconductivity and its Applications. 1992 ; pp. 123-130.
    @article{1a53491def2a4d5e9eb18389bf9e6b56,
    title = "Neutron diffraction studies of isotope-substituted tetragonal superconductors RBa2Cu2.76Fe0.24O7+o (R=Sm, Y)",
    abstract = "We report results of neutron diffraction measurements on tetragonal (P4/mmm) Sm zero matrix superconductors (152,154)Sm(0)Ba2Cu2.76Fe0.24O7+δ with Tc in the range 59 to 70 K, and similar YBa2Cu2.76Fe0.24O7+δ samples with Fe and Cu isotopes. The investigations were performed in the temperature range 8 to 300 K using three different high resolution diffractometers. Analysis of the measurements shows that Fe is distributed with approximately equal probability between the Cu(1) and Cu(2) positions. The temperature dependences of the lattice parameters of the Sm and Y systems showing similar nonlinear variations and no abrupt changes, which might be characteristic of intermediate valence instabilities in Sm, were observed.",
    author = "Vitali Trunov and Yu Kaganovich and A. Kurbakov and A. Matveev and A. Balagurov and A. Hewat and P. Fischer and Olli Antson and R. Maayouf",
    year = "1992",
    doi = "10.1016/0921-4534(92)90245-8",
    language = "English",
    pages = "123--130",
    journal = "Physica C: Superconductivity and its Applications",
    issn = "0921-4534",
    publisher = "Elsevier",

    }

    Trunov, V, Kaganovich, Y, Kurbakov, A, Matveev, A, Balagurov, A, Hewat, A, Fischer, P, Antson, O & Maayouf, R 1992, 'Neutron diffraction studies of isotope-substituted tetragonal superconductors RBa2Cu2.76Fe0.24O7+o (R=Sm, Y)', Physica C: Superconductivity and its Applications, pp. 123-130. https://doi.org/10.1016/0921-4534(92)90245-8

    Neutron diffraction studies of isotope-substituted tetragonal superconductors RBa2Cu2.76Fe0.24O7+o (R=Sm, Y). / Trunov, Vitali; Kaganovich, Yu; Kurbakov, A.; Matveev, A.; Balagurov, A.; Hewat, A.; Fischer, P.; Antson, Olli; Maayouf, R.

    In: Physica C: Superconductivity and its Applications, 1992, p. 123-130.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Neutron diffraction studies of isotope-substituted tetragonal superconductors RBa2Cu2.76Fe0.24O7+o (R=Sm, Y)

    AU - Trunov, Vitali

    AU - Kaganovich, Yu

    AU - Kurbakov, A.

    AU - Matveev, A.

    AU - Balagurov, A.

    AU - Hewat, A.

    AU - Fischer, P.

    AU - Antson, Olli

    AU - Maayouf, R.

    PY - 1992

    Y1 - 1992

    N2 - We report results of neutron diffraction measurements on tetragonal (P4/mmm) Sm zero matrix superconductors (152,154)Sm(0)Ba2Cu2.76Fe0.24O7+δ with Tc in the range 59 to 70 K, and similar YBa2Cu2.76Fe0.24O7+δ samples with Fe and Cu isotopes. The investigations were performed in the temperature range 8 to 300 K using three different high resolution diffractometers. Analysis of the measurements shows that Fe is distributed with approximately equal probability between the Cu(1) and Cu(2) positions. The temperature dependences of the lattice parameters of the Sm and Y systems showing similar nonlinear variations and no abrupt changes, which might be characteristic of intermediate valence instabilities in Sm, were observed.

    AB - We report results of neutron diffraction measurements on tetragonal (P4/mmm) Sm zero matrix superconductors (152,154)Sm(0)Ba2Cu2.76Fe0.24O7+δ with Tc in the range 59 to 70 K, and similar YBa2Cu2.76Fe0.24O7+δ samples with Fe and Cu isotopes. The investigations were performed in the temperature range 8 to 300 K using three different high resolution diffractometers. Analysis of the measurements shows that Fe is distributed with approximately equal probability between the Cu(1) and Cu(2) positions. The temperature dependences of the lattice parameters of the Sm and Y systems showing similar nonlinear variations and no abrupt changes, which might be characteristic of intermediate valence instabilities in Sm, were observed.

    U2 - 10.1016/0921-4534(92)90245-8

    DO - 10.1016/0921-4534(92)90245-8

    M3 - Article

    SP - 123

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    JO - Physica C: Superconductivity and its Applications

    JF - Physica C: Superconductivity and its Applications

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