| Issue |
Ann. Phys. Fr.
Volume 13, Number 5, 1988
|
|
|---|---|---|
| Page(s) | 437 - 439 | |
| DOI | https://doi.org/10.1051/anphys:01988001305043700 | |
| Published online | 01 June 2004 | |
Flux penetration for oxide superconductor YBCO
Department of Physics, Nanjing University, Nanjing, China
Based on systematic measurement of dc susceptibility and parameter and structure observation for YBCO oxide superconductor, a model is proposed in which sandwich of superconducting and normal phases is supposed. If crystal defects in the samples are considered to be the normal phase, the measured small dc susceptibility can be understood.
Résumé
Selon une mesure systématique de la susceptibilité dc et du paramètre pour le supraconducteur de l'oxyde YBCO et après observation de sa structure, on propose un modèle supposant un sandwich entre supraconducteur et phase normale. Si la défectibilité du cristal dans les échantillons est considérée comme la phase normale, on comprend la petite susceptibilité dc mesurée.
PACS: 7430C – Magnetic properties of superconductors / 7470V – Perovskite phase superconductors
Key words: barium compounds / high temperature superconductors / magnetic flux / magnetic susceptibility / penetration depth superconductivity / yttrium compounds / high temperature superconductor / flux penetration / oxide superconductor / DC susceptibility / model / crystal defects / normal phase
© EDP Sciences, 1988