Current-voltage curves and critical current densities of monocore Ag-clad (Bi,Pb)2Sr2Ca2Cu3O10+x tapes for currents applied perpendicular and parallel to the tape plane

M. Polak, M. Majoros, Jaakko Paasi

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    We analysed I–V curves of a monocore, Ag-clad (Bi, Pb)2Sr2Ca2Cu3O10+x tape measured with current flowing perpendicular to its broad face. The measurements showed that the boundary superconductor/Ag has a resistive character.
    We have also found that in this experimental configuration the edges of the core connecting its upper and lower surface layer influence I–V curves in a decisive way. For the sample prepared from the original tape with an intact core and Ag edges, the shape of the I–V curves measured with perpendicular current was similar to those measured with current flowing parallel to the tape axis. The shape of the I–V curves for perpendicular current drastically changed if we interrupted the connections between the surface core layers by cutting off the core edges.
    The observed I–V curves exhibited two bends indicating the presence of two layers with two different critical current densities in the direction perpendicular to the broad face of the core. The higher Jc was 270 A cm−2 and the lower one was 150 A cm−2 (in zero external magnetic field at 77 K). Both Jc values were considerably lower than the value of Jc = 1 × 104 A cm−2 measured with current flowing parallel to the tape axis.
    Original languageEnglish
    Pages (from-to)1628-1634
    JournalSuperconductor Science and Technology
    Volume15
    Issue number11
    DOIs
    Publication statusPublished - 2002
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Tapes
    tapes
    critical current
    current density
    Electric potential
    electric potential
    curves
    Superconducting materials
    Magnetic fields
    surface layers
    configurations
    magnetic fields

    Cite this

    @article{af30e27835f743548a637483c7ccd673,
    title = "Current-voltage curves and critical current densities of monocore Ag-clad (Bi,Pb)2Sr2Ca2Cu3O10+x tapes for currents applied perpendicular and parallel to the tape plane",
    abstract = "We analysed I–V curves of a monocore, Ag-clad (Bi, Pb)2Sr2Ca2Cu3O10+x tape measured with current flowing perpendicular to its broad face. The measurements showed that the boundary superconductor/Ag has a resistive character. We have also found that in this experimental configuration the edges of the core connecting its upper and lower surface layer influence I–V curves in a decisive way. For the sample prepared from the original tape with an intact core and Ag edges, the shape of the I–V curves measured with perpendicular current was similar to those measured with current flowing parallel to the tape axis. The shape of the I–V curves for perpendicular current drastically changed if we interrupted the connections between the surface core layers by cutting off the core edges. The observed I–V curves exhibited two bends indicating the presence of two layers with two different critical current densities in the direction perpendicular to the broad face of the core. The higher Jc was 270 A cm−2 and the lower one was 150 A cm−2 (in zero external magnetic field at 77 K). Both Jc values were considerably lower than the value of Jc = 1 × 104 A cm−2 measured with current flowing parallel to the tape axis.",
    author = "M. Polak and M. Majoros and Jaakko Paasi",
    year = "2002",
    doi = "10.1088/0953-2048/15/11/324",
    language = "English",
    volume = "15",
    pages = "1628--1634",
    journal = "Superconductor Science and Technology",
    issn = "0953-2048",
    publisher = "Institute of Physics IOP",
    number = "11",

    }

    Current-voltage curves and critical current densities of monocore Ag-clad (Bi,Pb)2Sr2Ca2Cu3O10+x tapes for currents applied perpendicular and parallel to the tape plane. / Polak, M.; Majoros, M.; Paasi, Jaakko.

    In: Superconductor Science and Technology, Vol. 15, No. 11, 2002, p. 1628-1634.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Current-voltage curves and critical current densities of monocore Ag-clad (Bi,Pb)2Sr2Ca2Cu3O10+x tapes for currents applied perpendicular and parallel to the tape plane

    AU - Polak, M.

    AU - Majoros, M.

    AU - Paasi, Jaakko

    PY - 2002

    Y1 - 2002

    N2 - We analysed I–V curves of a monocore, Ag-clad (Bi, Pb)2Sr2Ca2Cu3O10+x tape measured with current flowing perpendicular to its broad face. The measurements showed that the boundary superconductor/Ag has a resistive character. We have also found that in this experimental configuration the edges of the core connecting its upper and lower surface layer influence I–V curves in a decisive way. For the sample prepared from the original tape with an intact core and Ag edges, the shape of the I–V curves measured with perpendicular current was similar to those measured with current flowing parallel to the tape axis. The shape of the I–V curves for perpendicular current drastically changed if we interrupted the connections between the surface core layers by cutting off the core edges. The observed I–V curves exhibited two bends indicating the presence of two layers with two different critical current densities in the direction perpendicular to the broad face of the core. The higher Jc was 270 A cm−2 and the lower one was 150 A cm−2 (in zero external magnetic field at 77 K). Both Jc values were considerably lower than the value of Jc = 1 × 104 A cm−2 measured with current flowing parallel to the tape axis.

    AB - We analysed I–V curves of a monocore, Ag-clad (Bi, Pb)2Sr2Ca2Cu3O10+x tape measured with current flowing perpendicular to its broad face. The measurements showed that the boundary superconductor/Ag has a resistive character. We have also found that in this experimental configuration the edges of the core connecting its upper and lower surface layer influence I–V curves in a decisive way. For the sample prepared from the original tape with an intact core and Ag edges, the shape of the I–V curves measured with perpendicular current was similar to those measured with current flowing parallel to the tape axis. The shape of the I–V curves for perpendicular current drastically changed if we interrupted the connections between the surface core layers by cutting off the core edges. The observed I–V curves exhibited two bends indicating the presence of two layers with two different critical current densities in the direction perpendicular to the broad face of the core. The higher Jc was 270 A cm−2 and the lower one was 150 A cm−2 (in zero external magnetic field at 77 K). Both Jc values were considerably lower than the value of Jc = 1 × 104 A cm−2 measured with current flowing parallel to the tape axis.

    U2 - 10.1088/0953-2048/15/11/324

    DO - 10.1088/0953-2048/15/11/324

    M3 - Article

    VL - 15

    SP - 1628

    EP - 1634

    JO - Superconductor Science and Technology

    JF - Superconductor Science and Technology

    SN - 0953-2048

    IS - 11

    ER -