### Abstract

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 language | English |
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Pages (from-to) | 1628-1634 |

Journal | Superconductor Science and Technology |

Volume | 15 |

Issue number | 11 |

DOIs | |

Publication status | Published - 2002 |

MoE publication type | A1 Journal article-refereed |

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*Superconductor Science and Technology*,

*15*(11), 1628-1634. https://doi.org/10.1088/0953-2048/15/11/324

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*Superconductor Science and Technology*, vol. 15, no. 11, pp. 1628-1634. https://doi.org/10.1088/0953-2048/15/11/324

**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.

Research output: Contribution to journal › Article › Scientific › peer-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 -