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Influence of addition of CuOBaCuO2 on microstructure of melt-textured YBa2Cu3O7-δ ceramics and relevant transport properties
| Content Provider | Semantic Scholar |
|---|---|
| Author | Heintz, Jean-Marc Magro, Cristina Dordor, P. Chateigner, Daniel Germi, Pietro Pernet, Michel Machajdík, Daniel Bonnet, Jean Paul |
| Copyright Year | 1993 |
| Abstract | Abstract The present work is devoted to the study of the relationship between microstructure and electrical transport properties in melt-textured YBa 2 Cu 3 O 7−δ ceramics. The production process described gives rise to a preferential orientation within large domains. SEM micrographs show long platelets stacked in a parallel arrangement. A.c. susceptibility measurements reveal a very low level of weak links. Direct and indirect critical current measurements, performed on long and small samples, respectively, reveal large differences. This discrepancy is ascribed to pseudo random orientation of the large domains, as confirmed by rocking curve characterizations. Pole figure measurements show that the preferential orientation of the free surfaces of the bulk sample appears to be 〈113〉 or 〈103〉 whichever face of the parallelepiped is considered. The latter observation is in agreement with the existence of non-coherent regions inside the sample. Consequently, a high critical current density (12 000 A cm −2 ) can only be obtained for samples where long range texturing of the order of centimetres has been achieved. |
| Starting Page | 270 |
| Ending Page | 276 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/0011-2275(93)90044-O |
| Alternate Webpage(s) | http://www.ecole.ensicaen.fr/~chateign/pdf/Cryo33_270.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/0011-2275%2893%2990044-O |
| Volume Number | 33 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
