Vortex pinning regimes in YBa<inf>2</inf>Cu<inf>3</inf>O<inf>7-x</inf> bulk boundaries investigated by quantitative magnetic hall microscopy
Magnetic Hall probe microscopy in combination with an inverse problem solver was used to simultaneously determine the intragranular and intergranular critical current density dependences on the applied field of YBCO melt-textured welds with [001]-misorientation angles from 0° to 30°. This methodolog...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2008 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/377919 |
| Acceso en línea: | http://hdl.handle.net/10261/377919 https://api.elsevier.com/content/abstract/scopus_id/58249109864 |
| Access Level: | acceso abierto |
| Sumario: | Magnetic Hall probe microscopy in combination with an inverse problem solver was used to simultaneously determine the intragranular and intergranular critical current density dependences on the applied field of YBCO melt-textured welds with [001]-misorientation angles from 0° to 30°. This methodology enabled us to investigate the pinning mechanisms of grain boundary vortices, which evolve from Abrikosov vortices (AVs) to Abrikosov-Josephson vortices (AJVs) and then to Josephson vortices (JVs) as the angle increases. We present a magnetic field versus grain boundary angle phase diagram at 77K in which different intergrain vortex motion regimes can be identified. © 2008 IOP Publishing Ltd. |
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