中国物理B ›› 2005, Vol. 14 ›› Issue (11): 2325-2328.doi: 10.1088/1009-1963/14/11/030

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Bulk MgB2 superconductor with high critical current density synthesized by self-propagating high-temperature synthesis method

魏智强1, 冯旺军2, 夏天东3, 刘天佐3, 赵文军3   

  1. (1)School of Science, Lanzhou University of Technology,Lanzhou 730050, China; (2)School of Science, Lanzhou University of Technology,Lanzhou 730050, China;State Key Laboratory of Gansu New Non-ferrous Metal Materials,Lanzhou 730050, China; (3)State Key Laboratory of Gansu New Non-ferrous Metal Materials,Lanzhou 730050, China;College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
  • 收稿日期:2005-03-18 修回日期:2005-07-02 出版日期:2005-11-20 发布日期:2005-11-20
  • 基金资助:
    Project supported by the Natural Science Foundation of Gansu province of China (Grant No ZS032-B25-019).

Bulk MgB2 superconductor with high critical current density synthesized by self-propagating high-temperature synthesis method

Feng Wang-Jun (冯旺军)ab, Xia Tian-Dong (夏天东)bc, Liu Tian-Zuo (刘天佐)bc, Zhao Wen-Jun (赵文军)bc, Wei Zhi-Qiang (魏智强)a   

  1. a School of Science, Lanzhou University of Technology, Lanzhou 730050, China; b State Key Laboratory of Gansu New Non-ferrous Metal Materials, Lanzhou 730050, China; c College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
  • Received:2005-03-18 Revised:2005-07-02 Online:2005-11-20 Published:2005-11-20
  • Supported by:
    Project supported by the Natural Science Foundation of Gansu province of China (Grant No ZS032-B25-019).

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摘要： Pure MgB$_{2}$ bulk samples are successfully synthesized by self-propagating high-temperature synthesis (SHS) method. The experiments show that the best preheating temperature is 250℃, the highest Jc values of the prepared MgB2 reach 1.5×106A/cm2 (10K, 0.5T) and 1.7×106A/cm2 (20K, 0T), and the MgB2 particle sizes range from 2 to 5\mum. The advantages of this method are that it is simple, economical and suitable for the manufacture of bulk MgB2 materials on industrial scale.

关键词: SHS method, bulk MgB2 superconductor, superconductivity

Abstract: Pure MgB$_{2}$ bulk samples are successfully synthesized by self-propagating high-temperature synthesis (SHS) method. The experiments show that the best preheating temperature is 250℃, the highest Jc values of the prepared MgB2 reach 1.5×106A/cm2 (10K, 0.5T) and 1.7×106A/cm2 (20K, 0T), and the MgB2 particle sizes range from 2 to 5$\mu$m. The advantages of this method are that it is simple, economical and suitable for the manufacture of bulk MgB2 materials on industrial scale.

Key words: SHS method, bulk MgB2 superconductor, superconductivity

中图分类号:  (Metals; alloys and binary compounds)

  • 74.70.Ad
74.25.Sv (Critical currents) 74.62.Bf (Effects of material synthesis, crystal structure, and chemical composition)