Synthesis and characterization of Ln-123 superconductors
A sol-gel method was applied to prepare precursors for NdBa2Cu3O7-x (Nd-123) and SmBa2Cu3O7-x (Sm-123) superconducting compounds. The sintered products were examined by X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM). The powders sintered at 950 and 1000 °C showed the formati...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Serbian Chemical Society
2008-01-01
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| Series: | Journal of the Serbian Chemical Society |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0352-5139/2008/0352-51390804479Z.pdf |
| Summary: | A sol-gel method was applied to prepare precursors for NdBa2Cu3O7-x (Nd-123) and SmBa2Cu3O7-x (Sm-123) superconducting compounds. The sintered products were examined by X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM). The powders sintered at 950 and 1000 °C showed the formation of monophasic Nd-123 and Sm-123 superconductors. The formation of Nd-123 and Sm-123 phases from the sol-gel derived precursors at higher temperatures (1050 and 1100 °C), however, did not proceed due to the melting process. The correlation between the TC for different lanthanides (Ln Ho, Nd and Sm) in the Ln-123 compound and orthorhombicity and oxygen stoichiometry were also estimated. |
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| ISSN: | 0352-5139 1820-7421 |