{"id":15534,"date":"2002-11-02T00:00:00","date_gmt":"2002-11-02T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/caracterizacion-estructural-por-microscopia-electronica-de-alta-resolucion-de-nuevos-oxidos-mixtos-a2b2-o58-derivados-del-tipo-estructural-perovskita\/"},"modified":"2002-11-02T00:00:00","modified_gmt":"2002-11-02T00:00:00","slug":"caracterizacion-estructural-por-microscopia-electronica-de-alta-resolucion-de-nuevos-oxidos-mixtos-a2b2-o58-derivados-del-tipo-estructural-perovskita","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/caracterizacion-estructural-por-microscopia-electronica-de-alta-resolucion-de-nuevos-oxidos-mixtos-a2b2-o58-derivados-del-tipo-estructural-perovskita\/","title":{"rendered":"Caracterizaci\u00f3n estructural por microscopia electronica de alta resolucion de nuevos \u00f3xidos mixtos a2b2 o5+8. derivados del tipo estructural perovskita."},"content":{"rendered":"<h2>Tesis doctoral de <strong> M. Luisa Ruiz Gonzalez <\/strong><\/h2>\n<p>La microscopia electronica de alta resoluci\u00f3n ha sido utilizada como la tecnica m\u00e1s apropiada para analizar las variaciones de composici\u00f3n y la estabilizaci\u00f3n de nuevas superestructuras derivadas dela perovskita con composiciones a2b2o5+8.  se ha preparado la soluci\u00f3n lasr1-xbaxcugaoy con estructura brownmillerita en todo el margen de composici\u00f3n. La sustituci\u00f3n de todo el la y ba por sr ha conducido, la realizar la s\u00edntesis a alta presi\u00f3n, a la estabilizaci\u00f3n del termino n=1, sr2cugao5, de la serie hom\u00f3loga de superconductores gasr2can-1cun o2n+3, que presenta estructura tip brownmillerita con un nuevo tipo de orden a lo largo del eje b y desorden a lo largo de a. La aplicaci\u00f3n de altas presiones a la soluci\u00f3n solida anterior, la sr1-xbaxcugaoy, provoca una transici\u00f3n estructural ot&#8212;&gt;oot (o=octaedro, t=tetraedro) debido al aumento de coordinacion del ga.  el control riguroso del contenido en ox\u00edgeno del sistema labacucoo5.2- ha permitido estabilizar nuevos materiales para    =0,0.4 y 0.8, que pueden describirse a partir de una superestructura de orden 5 del tipo estructural perovskita. La disminuci\u00f3n del contenido en ox\u00edgeno va acompa\u00f1ada de una reducci\u00f3n del indice de coordinaci\u00f3n del cu. La relaci\u00f3n la_ba=2:3 facilita el orden de las posiciones a en un nuevo material de composici\u00f3n la2ba3cu2.5co2.5 o13. El procesado cristalografico de las im\u00e1genes de alta resoluci\u00f3n ha resultado imprescindible para la resoluci\u00f3n de las nuevas superestructuras.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Caracterizaci\u00f3n estructural por microscopia electronica de alta resolucion de nuevos \u00f3xidos mixtos a2b2 o5+8. derivados del tipo estructural perovskita.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Caracterizaci\u00f3n estructural por microscopia electronica de alta resolucion de nuevos \u00f3xidos mixtos a2b2 o5+8. derivados del tipo estructural perovskita. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 M. Luisa Ruiz Gonzalez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 11\/02\/2002<\/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>Jos\u00e9 Mar\u00eda Gonz\u00e1lez Calbet<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Mar\u00eda Vallet reg\u00ed <\/li>\n<li> No sanchez M\u00aa Luisa (vocal)<\/li>\n<li>Carlos Miravitlles torras (vocal)<\/li>\n<li>Jos\u00e9 Juan Calvino g\u00e1mez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de M. Luisa Ruiz Gonzalez La microscopia electronica de alta resoluci\u00f3n ha sido utilizada como la tecnica m\u00e1s [&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":[17,20],"tags":[12155,34492,7083,49506,2591,49507],"class_list":["post-15534","post","type-post","status-publish","format-standard","hentry","category-quimica","category-quimica-inorganica","tag-carlos-miravitlles-torras","tag-jose-juan-calvino-gamez","tag-jose-maria-gonzalez-calbet","tag-m-luisa-ruiz-gonzalez","tag-maria-vallet-regi","tag-no-sanchez-ma-luisa"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/15534","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=15534"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/15534\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=15534"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=15534"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=15534"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}