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

School of Materials Sience and Engineering

Northwest Institute for Nonferrous Metal Research
Zhengzhou University

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

15 Scopus citations

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 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.

Original language	English
Article number	021
Pages (from-to)	1215-1218
Number of pages	4
Journal	Superconductor Science and Technology
Volume	19
Issue number	11
DOIs	https://doi.org/10.1088/0953-2048/19/11/021
State	Published - 1 Nov 2006

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10.1088/0953-2048/19/11/021

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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,

day = "1",

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

language = "英语",

volume = "19",

pages = "1215--1218",

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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.

UR - https://www.scopus.com/pages/publications/33750602510

U2 - 10.1088/0953-2048/19/11/021

DO - 10.1088/0953-2048/19/11/021

M3 - 文章

AN - SCOPUS:33750602510

SN - 0953-2048

VL - 19

SP - 1215

EP - 1218

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

IS - 11

M1 - 021

ER -

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

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