Fabrication and Transport Critical Current Densities of MgB2/Fe/Cu Multifilament Tapes without Any Intermediate Annealing

被引：0

作者：

Yucel, E. ^{[1
]}

Terzioglu, C. ^{[2
]}

Varilci, A. ^{[2
]}

Gencer, A. ^{[3
]}

Belenli, I. ^{[2
]}

机构：

[1] Mustafa Kemal Univ, Fac Arts & Sci, Dept Phys, TR-31034 Antakya, Turkey

[2] Abant Izzet Baysal Univ, Fac Arts & Sci, Dept Phys, TR-14280 Bolu, Turkey

[3] Ankara Univ, Fac Sci, Dept Phys, TR-06100 Ankara, Turkey

来源：

ACTA PHYSICA POLONICA A | 2012年 / 121卷 / 03期

关键词：

SUPERCONDUCTING PROPERTIES; MGB2; WIRE;

D O I：

10.12693/APhysPolA.121.660

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have fabricated superconducting 6 and 7 filaments MgB2/Fe/Cu tapes by ex situ powder-in-tube method using Cu-sheath without any intermediate annealing. Properties of two different multicore MgB2/Fe/Cu tapes annealed at 900 degrees C 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.

引用

页码：660 / 665

页数：6

共 33 条

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