Magnetic field processing to enhance critical current densities of MgB2 superconductors

S. X. Dou; W. K. Yeoh; O. Shcherbakova; J. Horvat; J. H. Kim; A. V. Pan; D. Wexler; Y. Li; W. X. Li; Z. M. Ren; P. Munroe; J. Z. Cui

doi:10.1063/1.2388126

Magnetic field processing to enhance critical current densities of MgB2 superconductors

S. X. Dou, W. K. Yeoh, O. Shcherbakova, J. Horvat, J. H. Kim, A. V. Pan, D. Wexler, Y. Li, W. X. Li, Z. M. Ren, P. Munroe, J. Z. Cui

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

Abstract

A magnetic field of up to 12 T was applied during the sintering process of pure Mg B2 and carbon nanotube (CNT) doped Mg B2 wires. The authors have demonstrated that magnetic field processing results in grain refinement, homogeneity, and enhancement in Jc (H) and Hirr. The extent of improvement in Jc increases with increasing field. The Jc for a 10 T field processed CNT doped sample increases by a factor of 3 at 10 K and 8 T and at 20 K and 5 T, respectively. Hirr for the 10 T field processed CNT doped sample reached 9 T at 20 K, which exceeded the best value of SiC doped Mg B2 at 20 K. Magnetic field processing reduces the resistivity in CNT doped Mg B2, straightens the entangled CNTs, and improves the adherence between CNTs and the Mg B2 matrix.

Original language	English
Article number	202504
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	89
Issue number	20
DOIs	https://doi.org/10.1063/1.2388126
Publication status	Published - 2006

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title = "Magnetic field processing to enhance critical current densities of MgB2 superconductors",

abstract = "A magnetic field of up to 12 T was applied during the sintering process of pure Mg B2 and carbon nanotube (CNT) doped Mg B2 wires. The authors have demonstrated that magnetic field processing results in grain refinement, homogeneity, and enhancement in Jc (H) and Hirr. The extent of improvement in Jc increases with increasing field. The Jc for a 10 T field processed CNT doped sample increases by a factor of 3 at 10 K and 8 T and at 20 K and 5 T, respectively. Hirr for the 10 T field processed CNT doped sample reached 9 T at 20 K, which exceeded the best value of SiC doped Mg B2 at 20 K. Magnetic field processing reduces the resistivity in CNT doped Mg B2, straightens the entangled CNTs, and improves the adherence between CNTs and the Mg B2 matrix.",

author = "Dou, {S. X.} and Yeoh, {W. K.} and O. Shcherbakova and J. Horvat and Kim, {J. H.} and Pan, {A. V.} and D. Wexler and Y. Li and Li, {W. X.} and Ren, {Z. M.} and P. Munroe and Cui, {J. Z.}",

year = "2006",

doi = "10.1063/1.2388126",

language = "English",

volume = "89",

pages = "1--3",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "AIP Publishing ",

number = "20",

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TY - JOUR

T1 - Magnetic field processing to enhance critical current densities of MgB2 superconductors

AU - Dou, S. X.

AU - Yeoh, W. K.

AU - Shcherbakova, O.

AU - Horvat, J.

AU - Kim, J. H.

AU - Pan, A. V.

AU - Wexler, D.

AU - Li, Y.

AU - Li, W. X.

AU - Ren, Z. M.

AU - Munroe, P.

AU - Cui, J. Z.

PY - 2006

Y1 - 2006

N2 - A magnetic field of up to 12 T was applied during the sintering process of pure Mg B2 and carbon nanotube (CNT) doped Mg B2 wires. The authors have demonstrated that magnetic field processing results in grain refinement, homogeneity, and enhancement in Jc (H) and Hirr. The extent of improvement in Jc increases with increasing field. The Jc for a 10 T field processed CNT doped sample increases by a factor of 3 at 10 K and 8 T and at 20 K and 5 T, respectively. Hirr for the 10 T field processed CNT doped sample reached 9 T at 20 K, which exceeded the best value of SiC doped Mg B2 at 20 K. Magnetic field processing reduces the resistivity in CNT doped Mg B2, straightens the entangled CNTs, and improves the adherence between CNTs and the Mg B2 matrix.

AB - A magnetic field of up to 12 T was applied during the sintering process of pure Mg B2 and carbon nanotube (CNT) doped Mg B2 wires. The authors have demonstrated that magnetic field processing results in grain refinement, homogeneity, and enhancement in Jc (H) and Hirr. The extent of improvement in Jc increases with increasing field. The Jc for a 10 T field processed CNT doped sample increases by a factor of 3 at 10 K and 8 T and at 20 K and 5 T, respectively. Hirr for the 10 T field processed CNT doped sample reached 9 T at 20 K, which exceeded the best value of SiC doped Mg B2 at 20 K. Magnetic field processing reduces the resistivity in CNT doped Mg B2, straightens the entangled CNTs, and improves the adherence between CNTs and the Mg B2 matrix.

UR - http://handle.uws.edu.au:8081/1959.7/529148

U2 - 10.1063/1.2388126

DO - 10.1063/1.2388126

M3 - Article

SN - 0003-6951

VL - 89

SP - 1

EP - 3

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 20

M1 - 202504

ER -

Magnetic field processing to enhance critical current densities of MgB2 superconductors

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