Preparation and enhancement of critical current density in MgB2 wires and tapes

Y. Feng; G. Yan; Y. Zhao; C. F. Liu; P. X. Zhang; L. Zhou; A. Sulpice; E. Mossang; B. Hebral

doi:10.1088/0953-8984/16/10/012

Preparation and enhancement of critical current density in MgB₂ wires and tapes

Y. Feng
, G. Yan
, Y. Zhao
, C. F. Liu
, P. X. Zhang
, L. Zhou
, A. Sulpice
, E. Mossang
, B. Hebral

Northwest Institute for Nonferrous Metal Research
University of New South Wales
CNRS

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

5 Scopus citations

Abstract

We have successfully prepared monofilamentary MgB₂ wires and tapes with different sheathed metals such as Cu, Ta/Cu and Fe by the powder-in-tube method. The phase composition, superconducting properties and microstructure features are investigated by x-ray diffractometer, the standard four-probe technique, SQUID magnetometer, SEM and TEM. The results indicate that J_c in MgB₂/Ta/Cu wires is higher than 10⁵ A cm^-2 at 5 K in 0.1 T and 10⁴ A cm^-2 at 20 K in 1 T. By Ti-doping, J_c can be significantly improved. MgB₂/Fe wires show very high transport critical current densities of 1.43 × 10⁵ A cm^-2 (4.2 K, 4 T), 3.72 × 10⁴ A cm^-2 (15 K, 4 T) and 2.34 × 10⁴ A cm^-2 (25 K, 3 T). Also the results indicated that small grain size should respond to the large J_c in Ti-doped MgB₂ tape and MgB₂/Fe wire.

Original language	English
Pages (from-to)	1803-1811
Number of pages	9
Journal	Journal of Physics Condensed Matter
Volume	16
Issue number	10
DOIs	https://doi.org/10.1088/0953-8984/16/10/012
State	Published - 17 Mar 2004
Externally published	Yes

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Cite this

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title = "Preparation and enhancement of critical current density in MgB2 wires and tapes",

abstract = "We have successfully prepared monofilamentary MgB2 wires and tapes with different sheathed metals such as Cu, Ta/Cu and Fe by the powder-in-tube method. The phase composition, superconducting properties and microstructure features are investigated by x-ray diffractometer, the standard four-probe technique, SQUID magnetometer, SEM and TEM. The results indicate that Jc in MgB2/Ta/Cu wires is higher than 105 A cm-2 at 5 K in 0.1 T and 104 A cm-2 at 20 K in 1 T. By Ti-doping, Jc can be significantly improved. MgB2/Fe wires show very high transport critical current densities of 1.43 {\texttimes} 105 A cm-2 (4.2 K, 4 T), 3.72 {\texttimes} 104 A cm-2 (15 K, 4 T) and 2.34 {\texttimes} 104 A cm-2 (25 K, 3 T). Also the results indicated that small grain size should respond to the large Jc in Ti-doped MgB2 tape and MgB2/Fe wire.",

author = "Y. Feng and G. Yan and Y. Zhao and Liu, \{C. F.\} and Zhang, \{P. X.\} and L. Zhou and A. Sulpice and E. Mossang and B. Hebral",

year = "2004",

month = mar,

day = "17",

doi = "10.1088/0953-8984/16/10/012",

language = "英语",

volume = "16",

pages = "1803--1811",

journal = "Journal of Physics Condensed Matter",

issn = "0953-8984",

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TY - JOUR

T1 - Preparation and enhancement of critical current density in MgB2 wires and tapes

AU - Feng, Y.

AU - Yan, G.

AU - Zhao, Y.

AU - Liu, C. F.

AU - Zhang, P. X.

AU - Zhou, L.

AU - Sulpice, A.

AU - Mossang, E.

AU - Hebral, B.

PY - 2004/3/17

Y1 - 2004/3/17

N2 - We have successfully prepared monofilamentary MgB2 wires and tapes with different sheathed metals such as Cu, Ta/Cu and Fe by the powder-in-tube method. The phase composition, superconducting properties and microstructure features are investigated by x-ray diffractometer, the standard four-probe technique, SQUID magnetometer, SEM and TEM. The results indicate that Jc in MgB2/Ta/Cu wires is higher than 105 A cm-2 at 5 K in 0.1 T and 104 A cm-2 at 20 K in 1 T. By Ti-doping, Jc can be significantly improved. MgB2/Fe wires show very high transport critical current densities of 1.43 × 105 A cm-2 (4.2 K, 4 T), 3.72 × 104 A cm-2 (15 K, 4 T) and 2.34 × 104 A cm-2 (25 K, 3 T). Also the results indicated that small grain size should respond to the large Jc in Ti-doped MgB2 tape and MgB2/Fe wire.

AB - We have successfully prepared monofilamentary MgB2 wires and tapes with different sheathed metals such as Cu, Ta/Cu and Fe by the powder-in-tube method. The phase composition, superconducting properties and microstructure features are investigated by x-ray diffractometer, the standard four-probe technique, SQUID magnetometer, SEM and TEM. The results indicate that Jc in MgB2/Ta/Cu wires is higher than 105 A cm-2 at 5 K in 0.1 T and 104 A cm-2 at 20 K in 1 T. By Ti-doping, Jc can be significantly improved. MgB2/Fe wires show very high transport critical current densities of 1.43 × 105 A cm-2 (4.2 K, 4 T), 3.72 × 104 A cm-2 (15 K, 4 T) and 2.34 × 104 A cm-2 (25 K, 3 T). Also the results indicated that small grain size should respond to the large Jc in Ti-doped MgB2 tape and MgB2/Fe wire.

UR - https://www.scopus.com/pages/publications/1642387566

U2 - 10.1088/0953-8984/16/10/012

DO - 10.1088/0953-8984/16/10/012

M3 - 文章

AN - SCOPUS:1642387566

SN - 0953-8984

VL - 16

SP - 1803

EP - 1811

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 10

ER -

Preparation and enhancement of critical current density in MgB₂ wires and tapes

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