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Title: | The Effect of Zn Substitution of Ca in Bipbsrcacuo Superconductors Sintered at 830°c | Authors: | Kocabaş, Kemal Şakiroğlu, Serpil Çiftçioğlu, Muhsin Ercan, İsmail Epik, Hakan Bilgili, Özlem |
Keywords: | Bi-based superconductors Scanning electronic microscopy X-ray diffraction Zn substitution Zinc |
Publisher: | Springer Verlag | Source: | Kocabaş, K., Şakiroğlu, S., Çiftçioğlu, M., Ercan, İ., Epik, H., and Bilgili, Ö. (2009). The effect of Zn substitution of Ca in BiPbSrCaCuO superconductors sintered at 830°C. Journal of Superconductivity and Novel Magnetism, 22(8), 749-754. doi:10.1007/s10948-009-0491-8 | Abstract: | The effect of partial substitution of Ca by Zn in Bi 1.7Pb 0.3Sr 2Ca 2-x Zn x Cu 3O y at x=0.00, 0.05, 0.10, 0.15 and 0.20 levels on the electrical and structural properties was investigated in this work. The characterization of the ceramics prepared by the conventional solid-state reaction method were done by resistance-temperature measurements, XRD, SEM and density analysis. Low levels of Zn substitution of Ca caused significant changes in the properties of the ceramics. The low-T c superconducting properties were enhanced and the fraction of the low-T c (2212) phase were found to increase at x=0.15 level of Zn substitution at 830°C sintering temperature. Zero resistance was observed only in sample D with x=0.15 and the T c was determined as 92 K. The SEM micrographs and the density analysis have shown that this was the densest packed ceramic. | URI: | http://dx.doi.org/10.1007/s10948-009-0491-8 http://hdl.handle.net/11147/2541 |
ISSN: | 1557-1947 1557-1939 |
Appears in Collections: | Chemical Engineering / Kimya Mühendisliği Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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