Hot isostatic pressing of powder in tube MgB2 wires

A. Serquis; L. Civale; D. L. Hammon; X. Z. Liao; J. Y. Coulter; Y. T. Zhu; M. Jaime; D. E. Peterson; F. M. Mueller; V. F. Nesterenko; Y. Gu

doi:10.1063/1.1571231

Hot isostatic pressing of powder in tube MgB₂ wires

A. Serquis^*, L. Civale, D. L. Hammon, X. Z. Liao, J. Y. Coulter, Y. T. Zhu, M. Jaime, D. E. Peterson, F. M. Mueller, V. F. Nesterenko, Y. Gu

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

155 Citations (Scopus)

Abstract

The critical current density (J_c) of hot isostatic pressed (HIPed) MgB₂ wires, measured by dc transport and magnetization, is compared with that of similar wires annealed at ambient pressure. The HIPed wires have a higher J_c than the annealed wires, especially at high temperatures and magnetic fields, and higher irreversibility field (H_irr). The HIPed wires are promising for applications, with J_c. >10⁶ A/cm²at 5 K and zero field and >10⁴ A/cm² at 1.5 T and 26.5 K, and H_irr~ 17 T at 4 K. The improvement is attributed to a high density of structural defects, which are the likely source of vortex pinning. These defects, observed by transmission electron microscopy, include small angle twisting, tilting, and bending boundaries, resulting in the formation of subgrains within MgB₂crystallites.

Original language	English
Pages (from-to)	2847-2849
Journal	Applied Physics Letters
Volume	82
Issue number	17
Online published	21 Apr 2003
DOIs	https://doi.org/10.1063/1.1571231
Publication status	Published - 28 Apr 2003
Externally published	Yes

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@article{652f9f635a4641888a0b43cc25c285cf,

title = "Hot isostatic pressing of powder in tube MgB2 wires",

abstract = "The critical current density (Jc) of hot isostatic pressed (HIPed) MgB2 wires, measured by dc transport and magnetization, is compared with that of similar wires annealed at ambient pressure. The HIPed wires have a higher Jc than the annealed wires, especially at high temperatures and magnetic fields, and higher irreversibility field (Hirr). The HIPed wires are promising for applications, with Jc. >106 A/cm2 at 5 K and zero field and >104 A/cm2 at 1.5 T and 26.5 K, and Hirr ~ 17 T at 4 K. The improvement is attributed to a high density of structural defects, which are the likely source of vortex pinning. These defects, observed by transmission electron microscopy, include small angle twisting, tilting, and bending boundaries, resulting in the formation of subgrains within MgB2 crystallites.",

author = "A. Serquis and L. Civale and Hammon, {D. L.} and Liao, {X. Z.} and Coulter, {J. Y.} and Zhu, {Y. T.} and M. Jaime and Peterson, {D. E.} and Mueller, {F. M.} and Nesterenko, {V. F.} and Y. Gu",

year = "2003",

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day = "28",

doi = "10.1063/1.1571231",

language = "English",

volume = "82",

pages = "2847--2849",

journal = "Applied Physics Letters",

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TY - JOUR

T1 - Hot isostatic pressing of powder in tube MgB2 wires

AU - Serquis, A.

AU - Civale, L.

AU - Hammon, D. L.

AU - Liao, X. Z.

AU - Coulter, J. Y.

AU - Zhu, Y. T.

AU - Jaime, M.

AU - Peterson, D. E.

AU - Mueller, F. M.

AU - Nesterenko, V. F.

AU - Gu, Y.

PY - 2003/4/28

Y1 - 2003/4/28

N2 - The critical current density (Jc) of hot isostatic pressed (HIPed) MgB2 wires, measured by dc transport and magnetization, is compared with that of similar wires annealed at ambient pressure. The HIPed wires have a higher Jc than the annealed wires, especially at high temperatures and magnetic fields, and higher irreversibility field (Hirr). The HIPed wires are promising for applications, with Jc. >106 A/cm2 at 5 K and zero field and >104 A/cm2 at 1.5 T and 26.5 K, and Hirr ~ 17 T at 4 K. The improvement is attributed to a high density of structural defects, which are the likely source of vortex pinning. These defects, observed by transmission electron microscopy, include small angle twisting, tilting, and bending boundaries, resulting in the formation of subgrains within MgB2 crystallites.

AB - The critical current density (Jc) of hot isostatic pressed (HIPed) MgB2 wires, measured by dc transport and magnetization, is compared with that of similar wires annealed at ambient pressure. The HIPed wires have a higher Jc than the annealed wires, especially at high temperatures and magnetic fields, and higher irreversibility field (Hirr). The HIPed wires are promising for applications, with Jc. >106 A/cm2 at 5 K and zero field and >104 A/cm2 at 1.5 T and 26.5 K, and Hirr ~ 17 T at 4 K. The improvement is attributed to a high density of structural defects, which are the likely source of vortex pinning. These defects, observed by transmission electron microscopy, include small angle twisting, tilting, and bending boundaries, resulting in the formation of subgrains within MgB2 crystallites.

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U2 - 10.1063/1.1571231

DO - 10.1063/1.1571231

M3 - RGC 21 - Publication in refereed journal

SN - 0003-6951

VL - 82

SP - 2847

EP - 2849

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 17

ER -