TY - JOUR
T1 - Enhanced critical current density of ex situ MgB2 via control of Mg assisted sintering
AU - Hapipi, Nurhidayah Mohd
AU - Chen, Soo Kien
AU - Shaari, Abdul Halim
AU - Kechik, Mohd Mustafa Awang
AU - Lim, Kean Pah
AU - Tan, Kar Ban
AU - Lee, Oon Jew
AU - Arvapalli, Sai Srikanth
AU - Miryala, Muralidhar
N1 - Funding Information:
Ministry of Education Malaysia supports this work through the Fundamental Research Grant Scheme (FRGS/1/2018/STG07/UPM/02/1). This work was partly supported by the Shibaura Institute of Technology (SIT) Research Center for Green Innovation and Grant-in-Aid FD research budget code: 112282.
Publisher Copyright:
© 2022, The Author(s).
PY - 2022/5
Y1 - 2022/5
N2 - 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.
AB - 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.
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U2 - 10.1007/s10854-022-08101-3
DO - 10.1007/s10854-022-08101-3
M3 - Article
AN - SCOPUS:85127416708
SN - 0957-4522
VL - 33
SP - 11257
EP - 11268
JO - Journal of Materials Science: Materials in Electronics
JF - Journal of Materials Science: Materials in Electronics
IS - 14
ER -