| Автор | V L Svetchnikov |
| Автор | V S Flis |
| Автор | A A Kalenyuk |
| Автор | A L Kasatkin |
| Автор | A I Rebikov |
| Автор | V O Moskaliuk |
| Автор | C G Tretiatchenko |
| Автор | V M Pan |
| Дата выпуска | 2010-06-01 |
| dc.description | We have carried out a comprehensive study of a relation between the nanostructure and electromagnetic properties of the films prepared by pulse laser deposition on LaAlO<sub>3</sub> substrates using YBCO targets with BaZrO<sub>3</sub> additives. HREM studies revealed that depending on the deposition conditions BZO can precipitate as nanorods normal to the substrate or as BaYZr<sub>x</sub>O<sub>y</sub> nano-pancakes. BZO nanorods are formed at lower laser power and higher substrate temperature. Their lattice is rotated by 3-4° to provide matching with matrix without dislocations. In a contrary, the nano-pancakes are surrounded with a great number of dislocations. Mechanisms of the nanostructure formation have been analyzed. Embedding of a proper kind of nanoparticles into HTS films leads not only to a certain increase of the critical current density J<sub>c</sub> but to a substantial weakening of its field and thickness dependences compared with pure YBCO films. Negative curvature of I-V-curves (in double-log scale) for YBCO (BZO) films is an evidence of strong pinning on extended defects, such as nanorods and threading dislocations, and/or collective vortex pinning. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | © 2010 IOP Publishing Ltd |
| Название | Nanotechnology as a way to overcome the rapid J<sub>c</sub> fall with HTS film thickness |
| Тип | paper |
| DOI | 10.1088/1742-6596/234/1/012041 |
| Electronic ISSN | 1742-6596 |
| Print ISSN | 1742-6588 |
| Журнал | Journal of Physics: Conference Series |
| Том | 234 |
| Первая страница | 12041 |
| Последняя страница | 12051 |
| Аффилиация | V L Svetchnikov; Institute for Metal Physics, 36 Vernadsky Blvd, Kiev 03142, Ukraine |
| Аффилиация | V S Flis; Institute for Metal Physics, 36 Vernadsky Blvd, Kiev 03142, Ukraine |
| Аффилиация | A A Kalenyuk; Institute for Metal Physics, 36 Vernadsky Blvd, Kiev 03142, Ukraine |
| Аффилиация | A L Kasatkin; Institute for Metal Physics, 36 Vernadsky Blvd, Kiev 03142, Ukraine |
| Аффилиация | A I Rebikov; Institute for Metal Physics, 36 Vernadsky Blvd, Kiev 03142, Ukraine |
| Аффилиация | V O Moskaliuk; Institute for Metal Physics, 36 Vernadsky Blvd, Kiev 03142, Ukraine |
| Аффилиация | C G Tretiatchenko; Institute for Metal Physics, 36 Vernadsky Blvd, Kiev 03142, Ukraine |
| Аффилиация | V M Pan; Institute for Metal Physics, 36 Vernadsky Blvd, Kiev 03142, Ukraine |
| Выпуск | 1 |
