{"id":144518,"date":"1993-01-01T00:00:00","date_gmt":"1993-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estabilidad-estructural-y-transiciones-de-fase-en-compuestos-a2bx4\/"},"modified":"1993-01-01T00:00:00","modified_gmt":"1993-01-01T00:00:00","slug":"estabilidad-estructural-y-transiciones-de-fase-en-compuestos-a2bx4","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/estabilidad-estructural-y-transiciones-de-fase-en-compuestos-a2bx4\/","title":{"rendered":"\u00abestabilidad estructural y transiciones de fase en compuestos a2bx4\u00bb."},"content":{"rendered":"<h2>Tesis doctoral de <strong> I\u00f1igo Etxebarria Altzaga <\/strong><\/h2>\n<p>El trabajo presentado se centra en el estudio de los mecanismos microscopicos que controlan la presencia o no de inestabilidades incomensurables en los compuestos de la familia a2bx4. El estudio presenta dos vertientes. Una teoria, basada en la obtencion de modelos de fuerzas semiepiricos que dan cuenta de la estructura experimental. Estos modelos son utilizados para analizar con detalle, mediante calculos de dinamica de red y simulacines de dinamica molecular, los factores que influyen en la estabilidad estructural. La parte teorica se complementa desarrollando modelos microscopicos y fenomenologicos simplificados.  por otro lado se presentan resultados experimentales obtenidos mediante difraccion inelastica de neutrones que corroboran los resutlados en las simulaciones.  en conjunto, el trabajo expuesto supone un avance sin precedentes en la comprension a nivel microscopopico de los factores que influyen en la aparicion de la inestabilidad inconmesurable en estos materiales.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>\u00abestabilidad estructural y transiciones de fase en compuestos a2bx4\u00bb.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 \u00abestabilidad estructural y transiciones de fase en compuestos a2bx4\u00bb. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 I\u00f1igo Etxebarria Altzaga <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Pa\u00eds vasco\/euskal herriko unibertsitatea<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1993<\/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> Perez Mato Juan  Manuel<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Angel Lopez Echevarri <\/li>\n<li>Jos\u00e9 Carlos Gomez Sal (vocal)<\/li>\n<li>Volker Heine (vocal)<\/li>\n<li>Marguerite Quilichini (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de I\u00f1igo Etxebarria Altzaga El trabajo presentado se centra en el estudio de los mecanismos microscopicos que controlan [&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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