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Co-addition of nano-Si and LaB6 effects on the critical current density of MgB2 superconductor


Citation

Mohd Hapipi, Nurhidayah and Chen, Soo Kien and Shaari, Abdul Halim and Awang Kechik, Mohd Mustafa and Lim, Kean Pah and Shabdin, Muhammad Kashfi and Tan, Kar Ban and Lee, Oon Jew and Miryala, Muralidhar (2024) Co-addition of nano-Si and LaB6 effects on the critical current density of MgB2 superconductor. Journal of Alloys and Compounds Communications, 3. art. no. 100020. pp. 1-7. ISSN 2950-2845

Abstract

In this work, different x wt% of nano-Si and 0.03 mol LaB6 (x = 0, 5, 10) were co-added into magnesium diboride, MgB2. For comparison, samples with the addition of x wt% of nano-Si alone (x = 0, 5, 10) were prepared. All the samples were synthesized via the in-situ reaction method. X-ray diffraction (XRD) results confirmed MgB2 as the major phase, with MgO and Mg2Si as the minor phases for all the samples. Unreacted LaB6 also appeared in the co-added samples. With the addition of nano-Si from 0 to 5 wt%, Jc at 3 T and 20 K increased from 1.1 kA/ cm2 to 2.8 kA/ cm2, indicating enhanced flux pinning in high field. However, the co-addition of LaB6 and nano-Si lowered the value of self-field and field-dependent Jc. The decrease of Jc is perhaps due to the excessive impurity of Mg2Si and LaB6 leading to a reduced supercurrent path in the samples. The Tc-onset of the pure sample was 37.5 K, and it slightly decreased with increasing levels of co-addition. The flux pinning plot showed that the samples with nano-Si addition had a greater pinning force than that of the pure one.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institut Nanosains dan Nanoteknologi
DOI Number: https://doi.org/10.1016/j.jacomc.2024.100020
Publisher: Elsevier
Keywords: MgB2; Critical current density; LaB6; Nano-Si
Depositing User: Ms. Zaimah Saiful Yazan
Date Deposited: 09 Jul 2025 08:09
Last Modified: 09 Jul 2025 08:09
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.jacomc.2024.100020
URI: http://psasir.upm.edu.my/id/eprint/117553
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