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Superconductivity of REBa2Cu3O7-δ (RE= Y, Dy, Er) Ceramic Synthesized Via Coprecipitation Method


Hamadneh, Imad and Rosli, A. M. and Abd Shukor, Roslan and Mohd Suib, Nurul Raihan and Syed Yahya, Syed Yusainee (2008) Superconductivity of REBa2Cu3O7-δ (RE= Y, Dy, Er) Ceramic Synthesized Via Coprecipitation Method. Journal of Physics: Conference Series, 97 (1). ISSN 1742-6588


The REBa2Cu3O7-δ (RE= Y, Dy, Er) superconducting ceramics have been prepared via coprecipitation(COP) method from nearly saturated solutions of metal acetates and 2- propanol solution of oxalic acid. The metal oxalates powders were subjected to thermal treatment of 12 hours calcination at 900oC. The pelletized powder was sintered for 15 hr at 920oC. All samples showed a single step transition in the R-T curves. The TC(R=0) for samples Dy123, Y123and Er123 and were 93 K, 91 K and 90 K, respectively. XRD data showed single phase of an orthorhombic structure for all samples. SEM micrographs showed large grain sizes that are randomly distributed. These results showed that COP method using metal oxalates starting powders is very effective to synthesize high quality superconductors and shorten the sintering time required due to the formation of sub micron oxalate powders.

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Official URL or Download Paper: http://dx.doi.org/10.1088/1742-6596/97/1/012063

Additional Metadata

Item Type: Article
Divisions: Faculty of Science
DOI Number: https://doi.org/10.1088/1742-6596/97/1/012063
Publisher: IOP Publishing
Keywords: Superconductivity, mechanical & thermal, ceramic
Depositing User: Najwani Amir Sariffudin
Date Deposited: 30 Apr 2010 04:29
Last Modified: 17 Sep 2015 01:31
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1088/1742-6596/97/1/012063
URI: http://psasir.upm.edu.my/id/eprint/5661
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