The role of MgO content in ex situ MgB2 wires

P. Kovac; I. Hugek; T. Meligek; Jean-Claude Grivel; W. Pachla; V. Strbik; R. Diduszko; J. Homeyer; N.H. Andersen

doi:10.1088/0953-2048/17/10/L03

The role of MgO content in ex situ MgB₂ wires

P. Kovac, I. Hugek, T. Meligek, Jean-Claude Grivel, W. Pachla, V. Strbik, R. Diduszko, J. Homeyer, N.H. Andersen

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Abstract

An experimental study of the effect of MgO content in the MgB2 powder used for ex situ made composite wires was carried out. Two single-core MgB2/Fe/Cu wires were made using commercial MgB2 powders from Alfa Aesar containing different fraction of MgO. Critical temperature and critical currents of as-deformed and heat-treated wires were measured. The differences between the wires are discussed and correlated with the MgO content. It was found that by increasing the amount of MgO, the inter-grain connectivity worsens, but well distributed and low size MgO particles improve flux pinning.

Original language	English
Journal	Superconductor Science & Technology
Volume	17
Issue number	10
Pages (from-to)	L41-L46
ISSN	0953-2048
DOIs	https://doi.org/10.1088/0953-2048/17/10/L03
Publication status	Published - 2004

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title = "The role of MgO content in ex situ MgB2 wires",

abstract = "An experimental study of the effect of MgO content in the MgB2 powder used for ex situ made composite wires was carried out. Two single-core MgB2/Fe/Cu wires were made using commercial MgB2 powders from Alfa Aesar containing different fraction of MgO. Critical temperature and critical currents of as-deformed and heat-treated wires were measured. The differences between the wires are discussed and correlated with the MgO content. It was found that by increasing the amount of MgO, the inter-grain connectivity worsens, but well distributed and low size MgO particles improve flux pinning. ",

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T1 - The role of MgO content in ex situ MgB2 wires

AU - Kovac, P.

AU - Hugek, I.

AU - Meligek, T.

AU - Grivel, Jean-Claude

AU - Pachla, W.

AU - Strbik, V.

AU - Diduszko, R.

AU - Homeyer, J.

AU - Andersen, N.H.

PY - 2004

Y1 - 2004

N2 - An experimental study of the effect of MgO content in the MgB2 powder used for ex situ made composite wires was carried out. Two single-core MgB2/Fe/Cu wires were made using commercial MgB2 powders from Alfa Aesar containing different fraction of MgO. Critical temperature and critical currents of as-deformed and heat-treated wires were measured. The differences between the wires are discussed and correlated with the MgO content. It was found that by increasing the amount of MgO, the inter-grain connectivity worsens, but well distributed and low size MgO particles improve flux pinning.

AB - An experimental study of the effect of MgO content in the MgB2 powder used for ex situ made composite wires was carried out. Two single-core MgB2/Fe/Cu wires were made using commercial MgB2 powders from Alfa Aesar containing different fraction of MgO. Critical temperature and critical currents of as-deformed and heat-treated wires were measured. The differences between the wires are discussed and correlated with the MgO content. It was found that by increasing the amount of MgO, the inter-grain connectivity worsens, but well distributed and low size MgO particles improve flux pinning.

KW - 5-I nano

U2 - 10.1088/0953-2048/17/10/L03

DO - 10.1088/0953-2048/17/10/L03

M3 - Journal article

SN - 0953-2048

VL - 17

SP - L41-L46

JO - Superconductor Science & Technology

JF - Superconductor Science & Technology

IS - 10