Fluctuation induces conductivity and microstructural studies in Y-123: Effect of CaO inclusion
This study explored the impact of CaO as effective fine pinning centres on the interactions among thermodynamic fluctuations of superconducting parameters during the superconducting transitions in the Y-123 (YBa2Cu3O7-δ) matrix system. The investigation involved introducing varying concentrations (0...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024
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| Online Access: | http://psasir.upm.edu.my/id/eprint/113810/ http://psasir.upm.edu.my/id/eprint/113810/1/113810.pdf |
| _version_ | 1848866328499191808 |
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| author | Yap, Siew Hong Awang Kechik, Mohd Mustafa Mohd Shariff, Khairul Khaizi Baqiah, Hussien Chen, Soo Kien Lim, Kean Pah Shabdin, Muhammad Kashfi Mohd Zaid, Mohd Hafiz Yaakob, Yazid Abdul Karim, Mohd Khalis Humaidi, Syahrul Shaari, Abdul Halim Miryala, Muralidhar |
| author_facet | Yap, Siew Hong Awang Kechik, Mohd Mustafa Mohd Shariff, Khairul Khaizi Baqiah, Hussien Chen, Soo Kien Lim, Kean Pah Shabdin, Muhammad Kashfi Mohd Zaid, Mohd Hafiz Yaakob, Yazid Abdul Karim, Mohd Khalis Humaidi, Syahrul Shaari, Abdul Halim Miryala, Muralidhar |
| author_sort | Yap, Siew Hong |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | This study explored the impact of CaO as effective fine pinning centres on the interactions among thermodynamic fluctuations of superconducting parameters during the superconducting transitions in the Y-123 (YBa2Cu3O7-δ) matrix system. The investigation involved introducing varying concentrations (0.0100 wt% ≤ × ≤ 0.6000 wt%) of CaO into the Y-123 matrix through a green approach thermal treatment method annealed in an oxygen flow. TGA-DTA analysis revealed that the thermal stability of CaO exceeded that of the Y-123 matrix system. In XRD results, all specimens crystallized into orthorhombic Y-123 as the main phase, accompanied by non-superconducting phases such as Y-211 and BaCuO2, contributing to the enhancement of superconducting parameters. These inclusions of CaO induced distinct trends in grain degradation, spiral grain growth, and the appearance of homogeneous Y-123 nano-entities within the Y-123 matrix system. DC resistivity measurements investigating thermal fluctuation conductivity showed reductions in transition temperature widths (ΔTc and ΔTcMF1-offset) reaching an optimal concentration of CaO inclusion at 0.0375 wt%. Additionally, intra-granular current density at 0 K (Jc(0)) experienced significant improvements at lower concentrations, peaking at 0.0375 wt% at 11.0 ×106 A/m2. The incorporation of CaO at 0.0375 wt% proved optimal for achieving finely scaled lattice defects in intergranular and intragranular coupling, serving as effective pinning centres. This dominance in the 3D regime of thermal fluctuation reduced flux motion and improved Jc(0). The study concluded that the deficient inclusion of CaO led to the well-dispersed formation of nano-sized Y-123 particles, enhancing the superconducting parameters. |
| first_indexed | 2025-11-15T14:18:51Z |
| format | Article |
| id | upm-113810 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T14:18:51Z |
| publishDate | 2024 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1138102024-11-26T04:36:46Z http://psasir.upm.edu.my/id/eprint/113810/ Fluctuation induces conductivity and microstructural studies in Y-123: Effect of CaO inclusion Yap, Siew Hong Awang Kechik, Mohd Mustafa Mohd Shariff, Khairul Khaizi Baqiah, Hussien Chen, Soo Kien Lim, Kean Pah Shabdin, Muhammad Kashfi Mohd Zaid, Mohd Hafiz Yaakob, Yazid Abdul Karim, Mohd Khalis Humaidi, Syahrul Shaari, Abdul Halim Miryala, Muralidhar This study explored the impact of CaO as effective fine pinning centres on the interactions among thermodynamic fluctuations of superconducting parameters during the superconducting transitions in the Y-123 (YBa2Cu3O7-δ) matrix system. The investigation involved introducing varying concentrations (0.0100 wt% ≤ × ≤ 0.6000 wt%) of CaO into the Y-123 matrix through a green approach thermal treatment method annealed in an oxygen flow. TGA-DTA analysis revealed that the thermal stability of CaO exceeded that of the Y-123 matrix system. In XRD results, all specimens crystallized into orthorhombic Y-123 as the main phase, accompanied by non-superconducting phases such as Y-211 and BaCuO2, contributing to the enhancement of superconducting parameters. These inclusions of CaO induced distinct trends in grain degradation, spiral grain growth, and the appearance of homogeneous Y-123 nano-entities within the Y-123 matrix system. DC resistivity measurements investigating thermal fluctuation conductivity showed reductions in transition temperature widths (ΔTc and ΔTcMF1-offset) reaching an optimal concentration of CaO inclusion at 0.0375 wt%. Additionally, intra-granular current density at 0 K (Jc(0)) experienced significant improvements at lower concentrations, peaking at 0.0375 wt% at 11.0 ×106 A/m2. The incorporation of CaO at 0.0375 wt% proved optimal for achieving finely scaled lattice defects in intergranular and intragranular coupling, serving as effective pinning centres. This dominance in the 3D regime of thermal fluctuation reduced flux motion and improved Jc(0). The study concluded that the deficient inclusion of CaO led to the well-dispersed formation of nano-sized Y-123 particles, enhancing the superconducting parameters. Elsevier 2024 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/113810/1/113810.pdf Yap, Siew Hong and Awang Kechik, Mohd Mustafa and Mohd Shariff, Khairul Khaizi and Baqiah, Hussien and Chen, Soo Kien and Lim, Kean Pah and Shabdin, Muhammad Kashfi and Mohd Zaid, Mohd Hafiz and Yaakob, Yazid and Abdul Karim, Mohd Khalis and Humaidi, Syahrul and Shaari, Abdul Halim and Miryala, Muralidhar (2024) Fluctuation induces conductivity and microstructural studies in Y-123: Effect of CaO inclusion. Journal of Alloys and Compounds, 1005. art. no. 175955. pp. 1-15. ISSN 0925-8388 https://linkinghub.elsevier.com/retrieve/pii/S0925838824025428 10.1016/j.jallcom.2024.175955 |
| spellingShingle | Yap, Siew Hong Awang Kechik, Mohd Mustafa Mohd Shariff, Khairul Khaizi Baqiah, Hussien Chen, Soo Kien Lim, Kean Pah Shabdin, Muhammad Kashfi Mohd Zaid, Mohd Hafiz Yaakob, Yazid Abdul Karim, Mohd Khalis Humaidi, Syahrul Shaari, Abdul Halim Miryala, Muralidhar Fluctuation induces conductivity and microstructural studies in Y-123: Effect of CaO inclusion |
| title | Fluctuation induces conductivity and microstructural studies in Y-123: Effect of CaO inclusion |
| title_full | Fluctuation induces conductivity and microstructural studies in Y-123: Effect of CaO inclusion |
| title_fullStr | Fluctuation induces conductivity and microstructural studies in Y-123: Effect of CaO inclusion |
| title_full_unstemmed | Fluctuation induces conductivity and microstructural studies in Y-123: Effect of CaO inclusion |
| title_short | Fluctuation induces conductivity and microstructural studies in Y-123: Effect of CaO inclusion |
| title_sort | fluctuation induces conductivity and microstructural studies in y-123: effect of cao inclusion |
| url | http://psasir.upm.edu.my/id/eprint/113810/ http://psasir.upm.edu.my/id/eprint/113810/ http://psasir.upm.edu.my/id/eprint/113810/ http://psasir.upm.edu.my/id/eprint/113810/1/113810.pdf |