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- Title
Preparation and characterization of superconducting YBa<sub>2</sub>(Cu<sub>1−x</sub>Cr<sub>x</sub>)<sub>4</sub>O<sub>8</sub> oxides by thermal analysis.
- Authors
Nenartaviciene, G.; Tõnsuaadu, K.; Jasaitis, D.; Beganskiene, A.; Kareiva, A.
- Abstract
In this study the formation of chromium substituted YBa2Cu4O8 (Y-124) superconductors has been investigated by TG/DTA measurements. The YBa2(Cu1−xCrx)4O8 ceramics with nominal compositions of x=0.01, 0.03, 0.05, 0.10 and 0.20 have been prepared by an aqueous sol-gel method using aqueous mixtures of the corresponding metal acetates and nitrates. Homogeneous precursor gels were obtained by complexing metal ions with tartaric acid. To assist the interpretation of the results obtained the synthesis products were additionally characterized by X-ray powder diffraction (XRD) and resistivity measurements. It was determined that doping the YBa2Cu4O8 phase with chromium has a strong effect on the phase purity and superconducting properties of the synthesis products.
- Subjects
CHROMIUM; CHROMIUM group; CERAMICS; SUPERCONDUCTORS; THERMAL analysis; CALORIMETRY
- Publication
Journal of Thermal Analysis & Calorimetry, 2007, Vol 90, Issue 1, p173
- ISSN
1388-6150
- Publication type
Article
- DOI
10.1007/s10973-006-7884-8