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A simple and reproducible way to synthesize PrBa2Cu4O8 under 1 atm of oxygen by amorphous citrate method
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1999 (English)In: Physica. C, Superconductivity, ISSN 0921-4534, Vol. 321, 74-80 p.Article in journal (Refereed) Published
Abstract [en]

A simple aqueous solution technique utilizing citric acid (CA) as a complexant was applied to prepare PrBa2Cu4O8 (Pr124) at ambient oxygen pressure. Heating of a mixed-solution of CA, water (H2O) and ions of Pr, Ba and Cu with a molar ratio of [CA]:[H2O]:[Pr + Ba + Cu] = 3.6:40:1 on a hot-plate set at 200 degrees C produced a transparent amorphous citrate "gel" without any precipitation, which after heat-treatment at 450 degrees C was converted to a precursor for Pr124. The Pr124 compound with only minor traces of BaCuO2, PrBaO3 and CuO formed after heat-treating the precursor twice at 850 degrees C for 60 h under 1 atm oxygen pressure. The amount of impurities in the citrate-derived Pr124 was approximately half of that in the best sample previously prepared by the more elaborate high-pressure technique. (C) 1999 Elsevier Science B.V. All rights reserved.

Place, publisher, year, edition, pages
1999. Vol. 321, 74-80 p.
Identifiers
URN: urn:nbn:se:miun:diva-14346OAI: oai:DiVA.org:miun-14346DiVA: diva2:435740
Note
Kakihana, M Kato, S Petrykin, V Backstrom, J Borjesson, L Osada, MAvailable from: 2011-08-19 Created: 2011-08-19 Last updated: 2011-11-27Bibliographically approved

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Bäckström, Joakim
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