{"id":72967,"date":"2018-03-09T23:17:51","date_gmt":"2018-03-09T23:17:51","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/critical-currents-and-dissipation-of-grain-boundary-networks-in-coated-conductors\/"},"modified":"2018-03-09T23:17:51","modified_gmt":"2018-03-09T23:17:51","slug":"critical-currents-and-dissipation-of-grain-boundary-networks-in-coated-conductors","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/critical-currents-and-dissipation-of-grain-boundary-networks-in-coated-conductors\/","title":{"rendered":"Critical currents and dissipation of grain boundary networks in coated conductors"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Ana M. Palau Masoliver <\/strong><\/h2>\n<p>Las cintas superconductoras de ybco han surgido como un material muy prometedor para aplicaciones de potencia ya permiten prestaciones de densidades de corriente cr\u00edtica del orden de 1ma\/cm2 a 77k bajo campos magn\u00e9ticos elevados (1-5t). Estas cientas est\u00e1n formadas por una estructura de fronteras de grano de bajo \u00e1ngulo (fgba) inducidas por la textura del substrato met\u00e1lico flexible sobre el que est\u00e1n depositadas, previo acondicionamiento mediante capas tamp\u00f3n. Esta granularidad representa la limitaci\u00f3n m\u00e1s importante al paso de corriente el\u00e9ctrica y establece la presencia de dos mecansmos distintos interactuantes asociados por un lado al paso de corriente percolativa a trav\u00e9s de la fgba (densidad de corriente cr\u00edtica asociada a las fronteras de grano, jc fg) y por el otro, a la corriente que fluye en el interiro de los granos superconductores (densidad de corriente cr\u00edtica asociada a los granos, jc g). Si bien jcg est\u00e1 claramente determinada por el anclaje de los v\u00f3rtices abrikosov en los granos, la disipaci\u00f3n asociada a jcfg es a\u00fan un interrogante, habi\u00e9ndose predicho te\u00f3ricamente la existencia de una nueva clase de v\u00f3rtices llamados abrikosov-josephson.  en esta tesis doctoral hemos analizado la respuesta electromagn\u00e9tica de las cintas superconductoras de ybco mediante medidas magn\u00e9ticas de cilos de hist\u00e9resis y medidas de susceptibilidad ac. A partir de la forma caracter\u00edstica de los ciclos de hist\u00e9resis hemos desarrollado un formalismo que nos ha permitido determinar de manera independiente y simult\u00e1nea las jcfg y jcg a bajo campo magn\u00e9tico, en el marco del modelo de estado cr\u00edtico. La metodolog\u00e1i desarrollada nos ha permitido estudiar la relaci\u00f3n existente entre los efectos de granularidad, el anclaje de v\u00f3rtices abrikosov y la disipaci\u00f3n asociada al movimiento de los v\u00f3rtices abrikosov-josephson en las fgba y por tanto nos ha permitido inferiro en los mecanismos f\u00edsicos que rigen el transporte el\u00e9c<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Critical currents and dissipation of grain boundary networks in coated conductors<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Critical currents and dissipation of grain boundary networks in coated conductors <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Ana M. Palau Masoliver <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 28\/02\/2005<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Teresa Puig Molina<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: benjamin Martinez perea <\/li>\n<li> De la cruz Francisco (vocal)<\/li>\n<li>xavier Obradors berenguer (vocal)<\/li>\n<li>e. Evetts jan (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Ana M. Palau Masoliver Las cintas superconductoras de ybco han surgido como un material muy prometedor para [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[332,987,199,1008,1126],"tags":[158526,34245,158527,158528,84048,20352],"class_list":["post-72967","post","type-post","status-publish","format-standard","hentry","category-ciencias-tecnologicas","category-electromagnetismo","category-fisica","category-fisica-del-estado-solido","category-tecnologia-de-materiales","tag-ana-m-palau-masoliver","tag-benjamin-Martinez-perea","tag-de-la-cruz-francisco","tag-e-evetts-jan","tag-teresa-puig-molina","tag-xavier-obradors-berenguer"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/72967","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/comments?post=72967"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/72967\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=72967"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=72967"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=72967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}