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Preparation and characterization of superconducting YBa2(Cu1−xCrx)4O8 oxides by thermal analysis

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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.

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Authors and Affiliations

  1. Department of General and Inorganic Chemistry, Vilnius University, Naugarduko 24, 03225, Vilnius, Lithuania

    G. Nenartaviciene, D. Jasaitis, A. Beganskiene & A. Kareiva

  2. Laboratory of Inorganic Materials, Tallinn University of Technology, Ehitajate tee 5, 19086, Tallinn, Estonia

    K. Tõnsuaadu

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  1. G. Nenartaviciene
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  2. K. Tõnsuaadu
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  3. D. Jasaitis
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  4. A. Beganskiene
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  5. A. Kareiva
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Correspondence to A. Kareiva.

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Nenartaviciene, G., Tõnsuaadu, K., Jasaitis, D. et al. Preparation and characterization of superconducting YBa2(Cu1−xCrx)4O8 oxides by thermal analysis. J Therm Anal Calorim 90, 173–178 (2007). https://doi.org/10.1007/s10973-006-7884-8

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  • DOI: https://doi.org/10.1007/s10973-006-7884-8

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