Enhanced critical current density of ex situ MgB2 via control of Mg assisted sintering

Nurhidayah Mohd Hapipi, Soo Kien Chen, Abdul Halim Shaari, Mohd Mustafa Awang Kechik, Kean Pah Lim, Kar Ban Tan, Oon Jew Lee, Sai Srikanth Arvapalli, Muralidhar Miryala

研究成果: Article査読

2 被引用数 (Scopus)


In this work, ex situ MgB2was mixed with 0.5 mol of Mg and sintered. The sintering conditions were varied over a temperature range of 600–1000 °C for 1, 3, and 7 h, respectively. The addition of Mg during the sintering increased the partial pressure of Mg and thus suppressed the decomposition of MgB2. Onset of critical temperature, Tc, was retained at ∼ 38 K even after the addition of Mg. By increasing the sintering temperature, magnetic critical current density, Jcat self-field, and 20 K of the ex situ samples increased consistently. With the addition of Mg for 1 h sintering, self-field Jc(20 K) was enhanced more than 20 times to 104A cm−2 as the sintering temperature was increased. Such significant enhancement in the Jcis mainly due to the improved grain coupling aided by Mg during the short sintering.

ジャーナルJournal of Materials Science: Materials in Electronics
出版ステータスPublished - 2022 5月

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 原子分子物理学および光学
  • 凝縮系物理学
  • 電子工学および電気工学


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