Improved superconducting properties in bulk MgB2 prepared by high-energy milling of Mg and B powders

Y. F. Wu; Y. F. Lu; G. Yan; J. S. Li; Y. Feng; H. P. Tang; S. K. Chen; H. L. Xu; C. S. Li; P. X. Zhang

doi:10.1088/0953-2048/19/11/021

Improved superconducting properties in bulk MgB₂ prepared by high-energy milling of Mg and B powders

Y. F. Wu, Y. F. Lu, G. Yan, J. S. Li, Y. Feng, H. P. Tang, S. K. Chen, H. L. Xu, C. S. Li, P. X. Zhang

材料学院

科研成果: 期刊稿件 › 文章 › 同行评审

15 引用（Scopus）

摘要

MgB₂ bulks were prepared by high-energy milling of Mg and B powders. The correlations between milling times, microstructure and superconducting properties were investigated in MgB₂ bulks. The samples were characterized by x-ray diffraction (XRD), energy dispersive spectrometry (EDX) and scanning electron microscopy (SEM), and the magnetization properties were examined with a superconducting quantum interference device (SQUID) magnetometer. The investigations showed that high-energy milling is an effective approach for obtaining fine crystalline (40-100nm) bulk MgB ₂ with good grain connectivity and high J_c performance. The critical current density reaches 2.0 × 10⁶Acm^-2 at 15K and 0.59T, 5.7 × 10⁵Acm^-2 at 2T and 3.0 × 10⁴Acm^-2 at 5T.

源语言	英语
文章编号	021
页（从-至）	1215-1218
页数	4
期刊	Superconductor Science and Technology
卷	19
期	11
DOI	https://doi.org/10.1088/0953-2048/19/11/021
出版状态	已出版 - 1 11月 2006

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title = "Improved superconducting properties in bulk MgB2 prepared by high-energy milling of Mg and B powders",

abstract = "MgB2 bulks were prepared by high-energy milling of Mg and B powders. The correlations between milling times, microstructure and superconducting properties were investigated in MgB2 bulks. The samples were characterized by x-ray diffraction (XRD), energy dispersive spectrometry (EDX) and scanning electron microscopy (SEM), and the magnetization properties were examined with a superconducting quantum interference device (SQUID) magnetometer. The investigations showed that high-energy milling is an effective approach for obtaining fine crystalline (40-100nm) bulk MgB 2 with good grain connectivity and high Jc performance. The critical current density reaches 2.0 × 106Acm-2 at 15K and 0.59T, 5.7 × 105Acm-2 at 2T and 3.0 × 104Acm-2 at 5T.",

author = "Wu, {Y. F.} and Lu, {Y. F.} and G. Yan and Li, {J. S.} and Y. Feng and Tang, {H. P.} and Chen, {S. K.} and Xu, {H. L.} and Li, {C. S.} and Zhang, {P. X.}",

year = "2006",

month = nov,

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doi = "10.1088/0953-2048/19/11/021",

language = "英语",

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TY - JOUR

T1 - Improved superconducting properties in bulk MgB2 prepared by high-energy milling of Mg and B powders

AU - Wu, Y. F.

AU - Lu, Y. F.

AU - Yan, G.

AU - Li, J. S.

AU - Feng, Y.

AU - Tang, H. P.

AU - Chen, S. K.

AU - Xu, H. L.

AU - Li, C. S.

AU - Zhang, P. X.

PY - 2006/11/1

Y1 - 2006/11/1

N2 - MgB2 bulks were prepared by high-energy milling of Mg and B powders. The correlations between milling times, microstructure and superconducting properties were investigated in MgB2 bulks. The samples were characterized by x-ray diffraction (XRD), energy dispersive spectrometry (EDX) and scanning electron microscopy (SEM), and the magnetization properties were examined with a superconducting quantum interference device (SQUID) magnetometer. The investigations showed that high-energy milling is an effective approach for obtaining fine crystalline (40-100nm) bulk MgB 2 with good grain connectivity and high Jc performance. The critical current density reaches 2.0 × 106Acm-2 at 15K and 0.59T, 5.7 × 105Acm-2 at 2T and 3.0 × 104Acm-2 at 5T.

AB - MgB2 bulks were prepared by high-energy milling of Mg and B powders. The correlations between milling times, microstructure and superconducting properties were investigated in MgB2 bulks. The samples were characterized by x-ray diffraction (XRD), energy dispersive spectrometry (EDX) and scanning electron microscopy (SEM), and the magnetization properties were examined with a superconducting quantum interference device (SQUID) magnetometer. The investigations showed that high-energy milling is an effective approach for obtaining fine crystalline (40-100nm) bulk MgB 2 with good grain connectivity and high Jc performance. The critical current density reaches 2.0 × 106Acm-2 at 15K and 0.59T, 5.7 × 105Acm-2 at 2T and 3.0 × 104Acm-2 at 5T.

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SN - 0953-2048

VL - 19

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EP - 1218

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

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Improved superconducting properties in bulk MgB2 prepared by high-energy milling of Mg and B powders

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Improved superconducting properties in bulk MgB₂ prepared by high-energy milling of Mg and B powders