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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...

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Main Authors:	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
Format:	Article
Language:	English
Published:	Elsevier 2024
Online Access:	http://psasir.upm.edu.my/id/eprint/113810/1/113810.pdf http://psasir.upm.edu.my/id/eprint/113810/ https://linkinghub.elsevier.com/retrieve/pii/S0925838824025428
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spelling	my.upm.eprints.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
institution	Universiti Putra Malaysia
building	UPM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Putra Malaysia
content_source	UPM Institutional Repository
url_provider	http://psasir.upm.edu.my/
language	English
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.
format	Article
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
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
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
title	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_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_sort	fluctuation induces conductivity and microstructural studies in y-123: effect of cao inclusion
publisher	Elsevier
publishDate	2024
url	http://psasir.upm.edu.my/id/eprint/113810/1/113810.pdf http://psasir.upm.edu.my/id/eprint/113810/ https://linkinghub.elsevier.com/retrieve/pii/S0925838824025428
_version_	1817844684744032256
score	13.235362

Fluctuation induces conductivity and microstructural studies in Y-123: Effect of CaO inclusion

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