Enhancement of critical current density for MgB2 prepared using carbon-encapsulated boron with co-addition of Dy2O3 and La2O3
In this work, magnesium diboride, MgB2 samples were prepared by using magnesium, Mg powder and carbon-encapsulated boron, B powder (1.35 wt% carbon) with addition of dysprosium oxide, Dy2O3 and lanthanum oxide, La2O3 as dopants. Different weight percentages with the ratio of x wt.% Dy2O3: x wt.% La2...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2020
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/88810/ http://psasir.upm.edu.my/id/eprint/88810/1/BORON.pdf |
| _version_ | 1848860700417458176 |
|---|---|
| author | Mohd Hapipi, Nurhidayah Miryala, Muralidhar Chen, Soo Kien Arvapalli, Sai Srikanth Murakami, Masato Awang Kechik, Mohd Mustafa Tan, Kar Ban Lee, Oon Jew |
| author_facet | Mohd Hapipi, Nurhidayah Miryala, Muralidhar Chen, Soo Kien Arvapalli, Sai Srikanth Murakami, Masato Awang Kechik, Mohd Mustafa Tan, Kar Ban Lee, Oon Jew |
| author_sort | Mohd Hapipi, Nurhidayah |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | In this work, magnesium diboride, MgB2 samples were prepared by using magnesium, Mg powder and carbon-encapsulated boron, B powder (1.35 wt% carbon) with addition of dysprosium oxide, Dy2O3 and lanthanum oxide, La2O3 as dopants. Different weight percentages with the ratio of x wt.% Dy2O3: x wt.% La2O3 were used where x = 0.00, 0.25, 0.50, 0.75, 1.00, respectively. X-ray diffraction (XRD) results confirmed MgB2 as the major phase for all the samples. Magnetization measurement showed a slight decrease of critical temperature, Tc from 38.1 K to 37.6 K with the co-addition of Dy2O3 and La2O3. Self-field critical current density, Jc at 20 K increased with the increasing of co-addition levels probably due to improved grain coupling. The highest self-field Jc obtained is 433 kA cm−2 with 1.00 wt% co-addition level. Field dependent Jc (≤4 T) at 20 K of the co-added samples is higher compared to that of the pure one. The present results show that a small amount of Dy2O3 and La2O3 co-addition into MgB2 is effective to enhance flux pinning and Jc. |
| first_indexed | 2025-11-15T12:49:24Z |
| format | Article |
| id | upm-88810 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T12:49:24Z |
| publishDate | 2020 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-888102021-10-06T03:22:26Z http://psasir.upm.edu.my/id/eprint/88810/ Enhancement of critical current density for MgB2 prepared using carbon-encapsulated boron with co-addition of Dy2O3 and La2O3 Mohd Hapipi, Nurhidayah Miryala, Muralidhar Chen, Soo Kien Arvapalli, Sai Srikanth Murakami, Masato Awang Kechik, Mohd Mustafa Tan, Kar Ban Lee, Oon Jew In this work, magnesium diboride, MgB2 samples were prepared by using magnesium, Mg powder and carbon-encapsulated boron, B powder (1.35 wt% carbon) with addition of dysprosium oxide, Dy2O3 and lanthanum oxide, La2O3 as dopants. Different weight percentages with the ratio of x wt.% Dy2O3: x wt.% La2O3 were used where x = 0.00, 0.25, 0.50, 0.75, 1.00, respectively. X-ray diffraction (XRD) results confirmed MgB2 as the major phase for all the samples. Magnetization measurement showed a slight decrease of critical temperature, Tc from 38.1 K to 37.6 K with the co-addition of Dy2O3 and La2O3. Self-field critical current density, Jc at 20 K increased with the increasing of co-addition levels probably due to improved grain coupling. The highest self-field Jc obtained is 433 kA cm−2 with 1.00 wt% co-addition level. Field dependent Jc (≤4 T) at 20 K of the co-added samples is higher compared to that of the pure one. The present results show that a small amount of Dy2O3 and La2O3 co-addition into MgB2 is effective to enhance flux pinning and Jc. Elsevier 2020 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/88810/1/BORON.pdf Mohd Hapipi, Nurhidayah and Miryala, Muralidhar and Chen, Soo Kien and Arvapalli, Sai Srikanth and Murakami, Masato and Awang Kechik, Mohd Mustafa and Tan, Kar Ban and Lee, Oon Jew (2020) Enhancement of critical current density for MgB2 prepared using carbon-encapsulated boron with co-addition of Dy2O3 and La2O3. Ceramics International, 46 (14). 23041 - 23048. ISSN 0272-8842 https://www.sciencedirect.com/science/article/pii/S0272884220317284 10.1016/j.ceramint.2020.06.081 |
| spellingShingle | Mohd Hapipi, Nurhidayah Miryala, Muralidhar Chen, Soo Kien Arvapalli, Sai Srikanth Murakami, Masato Awang Kechik, Mohd Mustafa Tan, Kar Ban Lee, Oon Jew Enhancement of critical current density for MgB2 prepared using carbon-encapsulated boron with co-addition of Dy2O3 and La2O3 |
| title | Enhancement of critical current density for MgB2 prepared using carbon-encapsulated boron with co-addition of Dy2O3 and La2O3 |
| title_full | Enhancement of critical current density for MgB2 prepared using carbon-encapsulated boron with co-addition of Dy2O3 and La2O3 |
| title_fullStr | Enhancement of critical current density for MgB2 prepared using carbon-encapsulated boron with co-addition of Dy2O3 and La2O3 |
| title_full_unstemmed | Enhancement of critical current density for MgB2 prepared using carbon-encapsulated boron with co-addition of Dy2O3 and La2O3 |
| title_short | Enhancement of critical current density for MgB2 prepared using carbon-encapsulated boron with co-addition of Dy2O3 and La2O3 |
| title_sort | enhancement of critical current density for mgb2 prepared using carbon-encapsulated boron with co-addition of dy2o3 and la2o3 |
| url | http://psasir.upm.edu.my/id/eprint/88810/ http://psasir.upm.edu.my/id/eprint/88810/ http://psasir.upm.edu.my/id/eprint/88810/ http://psasir.upm.edu.my/id/eprint/88810/1/BORON.pdf |