Superconducting properties of MgB2 bulks processed in high magnetic fields

Aixia Xu; Yanwei Ma; Xianping Zhang; Xiaohang Li; G. Nishijima; S. Awaji; K. Watanabe

doi:10.1016/j.physc.2006.05.032

Superconducting properties of MgB₂ bulks processed in high magnetic fields

Aixia Xu, Yanwei Ma, Xianping Zhang, Xiaohang Li, G. Nishijima, S. Awaji, K. Watanabe

IMR - High Field Laboratory for Superconducting Materials

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

6 Citations (Scopus)

Abstract

MgB₂ bulk samples were synthesized by the solid-reaction process in high magnetic fields. The effect of magnetic fields on the microstructure and superconducting properties of MgB₂ tapes has been investigated by using X-ray diffraction, scanning electron microscope and magnetic measurements. Under the application of an 8 T magnetic field, the critical transition temperature, T_c, remained unchanged, and the critical current density, J_c was enhanced by a factor of more than 2 for both temperatures of ∼5 K and 20 K. The experimental results suggested that the high magnetic field is effective for improving J_c of MgB₂ superconductors.

Original language	English
Pages (from-to)	811-813
Number of pages	3
Journal	Physica C: Superconductivity and its Applications
Volume	445-448
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physc.2006.05.032
Publication status	Published - 2006 Oct 1

Keywords

Critical current density J
Magnetic-field annealing
MgB

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10.1016/j.physc.2006.05.032

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title = "Superconducting properties of MgB2 bulks processed in high magnetic fields",

abstract = "MgB2 bulk samples were synthesized by the solid-reaction process in high magnetic fields. The effect of magnetic fields on the microstructure and superconducting properties of MgB2 tapes has been investigated by using X-ray diffraction, scanning electron microscope and magnetic measurements. Under the application of an 8 T magnetic field, the critical transition temperature, Tc, remained unchanged, and the critical current density, Jc was enhanced by a factor of more than 2 for both temperatures of ∼5 K and 20 K. The experimental results suggested that the high magnetic field is effective for improving Jc of MgB2 superconductors.",

keywords = "Critical current density J, Magnetic-field annealing, MgB",

author = "Aixia Xu and Yanwei Ma and Xianping Zhang and Xiaohang Li and G. Nishijima and S. Awaji and K. Watanabe",

note = "Funding Information: The authors would like to thank Dr. T. Nishizaki and Prof. T. Nojima of IMR, Tohoku Univ. for their help during the experiments. We also thank Profs. Yulei Jiao and Ling Xiao at GRINM, Beijing. This work was partially supported by the Natural Science Foundation of China under Grant Nos. 50472063 and 50572104.",

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doi = "10.1016/j.physc.2006.05.032",

language = "English",

volume = "445-448",

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T1 - Superconducting properties of MgB2 bulks processed in high magnetic fields

AU - Xu, Aixia

AU - Ma, Yanwei

AU - Zhang, Xianping

AU - Li, Xiaohang

AU - Nishijima, G.

AU - Awaji, S.

AU - Watanabe, K.

N1 - Funding Information: The authors would like to thank Dr. T. Nishizaki and Prof. T. Nojima of IMR, Tohoku Univ. for their help during the experiments. We also thank Profs. Yulei Jiao and Ling Xiao at GRINM, Beijing. This work was partially supported by the Natural Science Foundation of China under Grant Nos. 50472063 and 50572104.

PY - 2006/10/1

Y1 - 2006/10/1

N2 - MgB2 bulk samples were synthesized by the solid-reaction process in high magnetic fields. The effect of magnetic fields on the microstructure and superconducting properties of MgB2 tapes has been investigated by using X-ray diffraction, scanning electron microscope and magnetic measurements. Under the application of an 8 T magnetic field, the critical transition temperature, Tc, remained unchanged, and the critical current density, Jc was enhanced by a factor of more than 2 for both temperatures of ∼5 K and 20 K. The experimental results suggested that the high magnetic field is effective for improving Jc of MgB2 superconductors.

AB - MgB2 bulk samples were synthesized by the solid-reaction process in high magnetic fields. The effect of magnetic fields on the microstructure and superconducting properties of MgB2 tapes has been investigated by using X-ray diffraction, scanning electron microscope and magnetic measurements. Under the application of an 8 T magnetic field, the critical transition temperature, Tc, remained unchanged, and the critical current density, Jc was enhanced by a factor of more than 2 for both temperatures of ∼5 K and 20 K. The experimental results suggested that the high magnetic field is effective for improving Jc of MgB2 superconductors.

KW - Critical current density J

KW - Magnetic-field annealing

KW - MgB

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Superconducting properties of MgB₂ bulks processed in high magnetic fields

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Keywords

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