{"id":25534,"date":"2018-03-09T09:16:58","date_gmt":"2018-03-09T09:16:58","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estudio-estructural-y-magnetico-de-perovskitas-de-oxidos-mixtos-de-cobalto-y-rutenio\/"},"modified":"2018-03-09T09:16:58","modified_gmt":"2018-03-09T09:16:58","slug":"estudio-estructural-y-magnetico-de-perovskitas-de-oxidos-mixtos-de-cobalto-y-rutenio","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/la-laguna\/estudio-estructural-y-magnetico-de-perovskitas-de-oxidos-mixtos-de-cobalto-y-rutenio\/","title":{"rendered":"Estudio estructural y magn\u00e9tico de perovskitas de \u00f3xidos mixtos de cobalto y rutenio"},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Lozano Gorr\u00edn Antonio  Diego <\/strong><\/h2>\n<p>La tesis consta de seis cap\u00edtulos, m\u00e1s las conclusiones y un ap\u00e9ndice con algunos conceptos de la teor\u00eda de difracci\u00f3n.  el cap\u00edtulo primero es meramente introductorio, y en \u00e9l se desarrollan los antecedentes del tema en cuesti\u00f3n y se da una visi\u00f3n del estado actual.  en el segundo cap\u00edtulos se describen los m\u00e9todos de s\u00edntesis y la instrumentaci\u00f3n utilizada:  1,- difracci\u00f3n de rayos x en polvo.  2,- medidas de susceptibilidad magn\u00e9tica, difracci\u00f3n de neutrones a temperatura variable.  3,- an\u00e1lisis t\u00e9rmico.  tambi\u00e9n se describe el an\u00e1lisis de los difractogramas de polvo, el ajuste del perfil completo y principalmente el m\u00e9todo de rietveld.  en el cap\u00edtulo tercero denominado de \u00aban\u00e1lisis estructural de la perovskita y propiedades magn\u00e9ticas\u00bb, se lleva a cabo un an\u00e1lisis exhaustivo de la perovskita y sus derivados, incluyendo un an\u00e1lisis de los politipos hexagonales de las perovskitas y de las distorsiones de las estructuras debidas a giros, principalmente, destacando cu\u00e1les son los grupos espaciales que se derivan de este tipo de distorsiones y sus relaciones estructurales en el contexto de la teor\u00eda de grupos. A continuaci\u00f3n se hace un an\u00e1lisis del m\u00e9todo de Valencia de enlace. La \u00faltima parte se dedica a las propiedades magn\u00e9ticas.  en el cap\u00edtulo cuarto se aborda la preparaci\u00f3n y caracterizaci\u00f3n estructural de la familia de compuestos ba2in2xcoxo5, donde 0,5&lt;x&lt;1,7. Esta familia de compuestos tiene estructura de perovskita c\u00fabica, aunque los l\u00edmites puros de indio (brownmillerita) o cobalto (perovskita hexagonal) no lo son. Un estudio exhaustivo de sus propiedades magn\u00e9ticas nos lleva a concluir que tiene un comportamiento de vidrio de spin.  el cap\u00edtulo quinto se dedica al estudio de la familia sr2ru2-xcoxcoxo6, donde 0,5&lt;x&lt;1,5, incluyendo la s\u00edntesis y el estudio estructural, donde encontramos mezclas de fases para todas las concentraciones de partida, las cuales nos permit<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estudio estructural y magn\u00e9tico de perovskitas de \u00f3xidos mixtos de cobalto y rutenio<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estudio estructural y magn\u00e9tico de perovskitas de \u00f3xidos mixtos de cobalto y rutenio <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Lozano Gorr\u00edn Antonio  Diego <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 La laguna<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 19\/09\/2003<\/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>Pedro N\u00fa\u00f1ez Coello<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: javier Solans hughet <\/li>\n<li>mat\u00edas L\u00f3pez rodr\u00edguez (vocal)<\/li>\n<li>pedro Gili trujillo (vocal)<\/li>\n<li>regino Saez puche (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Lozano Gorr\u00edn Antonio Diego La tesis consta de seis cap\u00edtulos, m\u00e1s las conclusiones y un ap\u00e9ndice con [&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 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