Fabrication and Transport Critical Current Densities of MgB_2/Fe/Cu Multifilament Tapes without Any Intermediate Annealing

• Authors: E. Yucel , C. Terzioglu , A. Varilci , A. Gencer , I. Belenli
• Languages of publication: EN

Abstracts

EN

We have fabricated superconducting 6 and 7 filaments MgB_2/Fe/Cu tapes by ex situ powder-in-tube method using Cu-sheath without any intermediate annealing. Properties of two different multicore MgB_2/Fe/Cu tapes annealed at 900C for 2 h in high purity argon gas atmosphere were compared. The samples were characterized using scanning electron microscope, X-ray diffraction, electron dispersive spectroscopy, optical microscopy, critical transition temperature, transport critical current density, and magnetic measurements. Transport critical current densities of the 6 and 7 filaments tapes were found to be 450 A/cm^2 and 190 A/cm^2 at 20 K, respectively. From X-ray diffraction measurements, lattice parameters a and c were determined. From dc resistivity measurements, the connectivity between grains was investigated by using Rowell's connectivity analysis.

Keywords

EN

74.70.Ad; 84.71.Mn; 74.62.-c; 74.25.Sv; 74.25.F-

Discipline

• 84.71.Mn: Superconducting wires, fibers, and tapes
• 74.25.F-: Transport properties
• 74.25.Sv: Critical currents
• 74.62.-c: Transition temperature variations, phase diagrams
• 74.70.Ad: Metals; alloys and binary compounds (including A15, MgB2, etc.)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 3
• Pages: 660-665

Dates

published

2012-03

received

2011-05-31

(unknown)

2011-12-08

Contributors

author

E. Yucel

• Department of Physics, Faculty of Arts and Sciences, Mustafa Kemal University, 31034 Hatay, Turkey

author

C. Terzioglu

• Department of Physics, Faculty of Arts and Sciences, Abant Izzet Baysal University, 14280 Bolu, Turkey

author

A. Varilci

• Department of Physics, Faculty of Arts and Sciences, Abant Izzet Baysal University, 14280 Bolu, Turkey

author

A. Gencer

• Department of Physics, Faculty of Science, Ankara University, 06100 Ankara, Turkey

author

I. Belenli

• Department of Physics, Faculty of Arts and Sciences, Abant Izzet Baysal University, 14280 Bolu, Turkey

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Identifiers

DOI

10.12693/APhysPolA.121.660