{"id":56458,"date":"2018-03-09T22:44:14","date_gmt":"2018-03-09T22:44:14","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/magnetismo-en-nanoestructuras-de-metales-de-transicion\/"},"modified":"2018-03-09T22:44:14","modified_gmt":"2018-03-09T22:44:14","slug":"magnetismo-en-nanoestructuras-de-metales-de-transicion","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/magnetismo-en-nanoestructuras-de-metales-de-transicion\/","title":{"rendered":"Magnetismo en nanoestructuras de metales de transici\u00f3n"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Eduardo Mart\u00ednez Moreno <\/strong><\/h2>\n<p>En el presente trabajo se utiliza un m\u00e9todo semiemp\u00edrico de ligaduras fuertes (tb) en combinaci\u00f3n con el m\u00e9todo de primeros principios tb-lmto para obtener la estructura electr\u00f3nica y las propiedades magn\u00e9ticas en sistemas compuestos de metales de transici\u00f3n como cr, mn, fe y ni. El m\u00e9todo tb empleado permite el tratamiento de configuraciones magn\u00e9ticas no colineales, t\u00edpicas de sistemas que presentan frustraciones magn\u00e9ticas. Tambi\u00e9n permite realizar c\u00e1lculos en sistemas con un n\u00famero elevado de posiciones inequivalentes en un tiempo razonable. Los sistemas estudiados son los correspondientes a agregados de fe soportados en ni en diferentes orientaciones cristalogr\u00e1ficas, pel\u00edculas de mn soportadas en fe(001) y pel\u00edculas de cr soportadas en fe(001). En el caso de los agregados de fe en ni, se obtienen resultados estructurales y magn\u00e9ticos de acuerdo con experimentos recientes. Tambi\u00e9n se estudian las interacciones entre agregados soportados, muy importantes bajo el punto de vista tecnol\u00f3gico. En las pel\u00edculas de mn sobre fe, se consideran pel\u00edculas de diferentes espesores soportadas en sustratos ideales (sin escalones monoat\u00f3micos en la interfase) y luego se considera la presencia de escalones en la interfase. Los resultados obtenidos est\u00e1n en un muy buen acuerdo con experimentos recientes realizados con t\u00e9cnicas sp-stm\/sts. En las pel\u00edculas de cr sobre fe se realiza un estudio comparativo entre el cr y el mn cuando est\u00e1n depositados sobre fe, obteniendo comportamientos bastante diferentes entre dichos materiales. Por \u00faltimo, se consideran sistemas con interdifusi\u00f3n cr-fe, ya que bajo el punto de vista experimental es muy dif\u00edcil evitar este fen\u00f3meno.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Magnetismo en nanoestructuras de metales de transici\u00f3n<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Magnetismo en nanoestructuras de metales de transici\u00f3n <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Eduardo Mart\u00ednez Moreno <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Valladolid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 22\/12\/2006<\/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>Andr\u00e9s Vega Hierro<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal:  Balb\u00e1s ruesgas Luis Carlos <\/li>\n<li>Juan  faustino Aguilera granja (vocal)<\/li>\n<li>Luis Javier Gallego del hoyo (vocal)<\/li>\n<li> L\u00f3pez v\u00e1zquez de parga amadeo (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Eduardo Mart\u00ednez Moreno En el presente trabajo se utiliza un m\u00e9todo semiemp\u00edrico de ligaduras fuertes (tb) en [&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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