Synthesis and Irreversibility of Oxygen Weight Loss in 80 K YBa2Cu4O8 Superconductor

Synthesis of YBa2Cu4O8 superconductor usually requires oxygen pressure greater than 20 MPa and very long heating schedules at high temperatures. Here we report synthesis of YBa2Cu4O8 superconductor by the standard solid‐state reaction between the precursors BaCu2O3 and Y2O3 in the presence of alkali...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 1993-01, Vol.76 (1), p.245-248
Main Authors: Ravichandran, Duraiswamy, Sridharan, Varadarajan, Sivasankaran, Swaminathan, Biswas, Dharani Kanta, Nagarajan, Tharmalingam, Balachandran, Uthamalingam
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Electrotechnical and electronic ceramics
Exact sciences and technology
Technical ceramics
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Summary:Synthesis of YBa2Cu4O8 superconductor usually requires oxygen pressure greater than 20 MPa and very long heating schedules at high temperatures. Here we report synthesis of YBa2Cu4O8 superconductor by the standard solid‐state reaction between the precursors BaCu2O3 and Y2O3 in the presence of alkali nitrate. NaNO3, under ambient O2 pressure. The resulting sample showed zero resistance at 78 K. The presence of 124 was confirmed by high‐resolution X‐ray diffraction studies. Irreversibility of oxygen weight loss was studied by thermogravimetric analysis and differential thermal analysis.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1993.tb03718.x