{"id":24653,"date":"2003-11-07T00:00:00","date_gmt":"2003-11-07T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/sa%c2%adntesis-y-caracterizacion-de-oxidos-magnetorresistivos-del-tipo-a2femoo6-y-su-aplicacion-a-un-potenciometro-sin-contactos\/"},"modified":"2003-11-07T00:00:00","modified_gmt":"2003-11-07T00:00:00","slug":"sa%c2%adntesis-y-caracterizacion-de-oxidos-magnetorresistivos-del-tipo-a2femoo6-y-su-aplicacion-a-un-potenciometro-sin-contactos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/sa%c2%adntesis-y-caracterizacion-de-oxidos-magnetorresistivos-del-tipo-a2femoo6-y-su-aplicacion-a-un-potenciometro-sin-contactos\/","title":{"rendered":"S\u00edntesis y caracterizaci\u00f3n de \u00f3xidos magnetorresistivos del tipo a2femoo6 y su aplicaci\u00f3n a un potenci\u00f3metro sin contactos"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Jos\u00e9 Navarro Hern\u00e1ndez <\/strong><\/h2>\n<p>La motivaci\u00f3n de estas tesis surge de la publicaci\u00f3n de la naturaleza semimet\u00e1lica del \u00f3xido ferromagn\u00e9tico sr2femoo6, con importantes implicaciones en investigaci\u00f3n tanto a nivel fundamental como tecnol\u00f3gico.  los ferromagnetos semimet\u00e1licos presentan una magnetorresistencia importante a bajo campo magn\u00e9tico. El sr2femoo6 es especialmente interesante debido a su alta temperatura de curie (420k) comparado con las perovskitas de manganeso, de estructura similar.  esta tesis se divide en tres partes: s\u00edntesis, caracterizaci\u00f3n y aplicaci\u00f3n tecnol\u00f3gica.  en la parte de s\u00edntesis se muestra c\u00f3mo controlar los par\u00e1metros de la reacci\u00f3n de estado s\u00f3lido para optimizar la pureza y la presencia de defectos cristalogr\u00e1ficos en las muestras.  en la parte de caracterizaci\u00f3n se han estudiado los efectos de dichas impurezas y defectos a las propiedades magn\u00e9ticas y de transporte del material, encontrando resultados interesantes que aportan informaci\u00f3n sobre la naturaleza de las interacciones magn\u00e9ticas del sistema. Dichas interacciones son compatibles con un modelo de banda de conducci\u00f3n, un modelo de zener.  en la \u00faltima parte se estudia la aplicaci\u00f3n del sr2fem0o6 a la fabricaci\u00f3n de un potenci\u00f3metro sin contactos mediante la t\u00e9cnica de serigraf\u00eda, o screen-printing. Se han estudiado y superado las dificultades y constru\u00eddo un prototipo.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>S\u00edntesis y caracterizaci\u00f3n de \u00f3xidos magnetorresistivos del tipo a2femoo6 y su aplicaci\u00f3n a un potenci\u00f3metro sin contactos<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 S\u00edntesis y caracterizaci\u00f3n de \u00f3xidos magnetorresistivos del tipo a2femoo6 y su aplicaci\u00f3n a un potenci\u00f3metro sin contactos <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Jos\u00e9 Navarro Hern\u00e1ndez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 11\/07\/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>Josep Fontcuberta Gri\u00f1\u00f3<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Manuel ricardo Ibarra garcia <\/li>\n<li> Alonso alonso Jos\u00e9 Antonio (vocal)<\/li>\n<li>agn\u00e9s Barthelemy (vocal)<\/li>\n<li>benjam\u00edn Mart\u00ednez perea (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Jos\u00e9 Navarro Hern\u00e1ndez La motivaci\u00f3n de estas tesis surge de la publicaci\u00f3n de la naturaleza semimet\u00e1lica del [&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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