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Structural and Superconducting Properties of Thermal Treatment-Synthesised Bulk YBa2Cu3O7−δ Superconductor: Effect of Addition of SnO2 Nanoparticles

1
Department of Physics, Faculty of Science, Universiti Putra Malaysia, UPM Serdang 43400, Malaysia
2
School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
*
Author to whom correspondence should be addressed.
Materials 2019, 12(1), 92; https://doi.org/10.3390/ma12010092
Received: 17 August 2018 / Revised: 11 October 2018 / Accepted: 18 October 2018 / Published: 28 December 2018
(This article belongs to the Section Materials Physics)
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Abstract

YBa2Cu3O7−δ (Y-123) bulk superconductors with the addition of (0.0, 0.2, 0.4, 0.6, 0.8, and 1.0 wt.%) SnO2 nanoparticles were synthesised via a thermal treatment method. The influence of SnO2 addition on the superconducting properties by means of critical temperature, Tc, AC susceptibility, phase formation and microstructures, including its elemental composition analysis, were studied. Sharp superconducting transition, ∆Tc, and diamagnetic transition were obtained for all SnO2-added samples. It was observed that sample x = 0.4 with a Y-123 phase percentage of 95.8% gives the highest Tc, smallest ∆Tc, and the sharpest diamagnetic transition in the normalised susceptibility curves. The microstructure also showed an excess of Sn precipitates on the sample’s surface at x = 0.8 and above. As such, the best superconducting properties were observed at x = 0.4 SnO2 addition inside the Y-123 host sample. View Full-Text
Keywords: additions; YBa2Cu3O7−δ; SnO2; bulk superconductor; thermal treatment method additions; YBa2Cu3O7−δ; SnO2; bulk superconductor; thermal treatment method
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Mohd Yusuf, N.N.; Awang Kechik, M.M.; Baqiah, H.; Soo Kien, C.; Kean Pah, L.; Shaari, A.H.; Wan Jusoh, W.N.W.; Abd Sukor, S.I.; Mousa Dihom, M.; Talib, Z.A.; Abd-Shukor, R. Structural and Superconducting Properties of Thermal Treatment-Synthesised Bulk YBa2Cu3O7−δ Superconductor: Effect of Addition of SnO2 Nanoparticles. Materials 2019, 12, 92.

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