{"id":137335,"date":"2026-01-12T17:04:44","date_gmt":"2026-01-12T17:04:44","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estudio-de-los-oxidos-del-tipo-tr2nio4delta-tr-la-pr-y-nd-mediante-tecnicas-de-haces-de-neutrones\/"},"modified":"2026-01-12T17:04:44","modified_gmt":"2026-01-12T17:04:44","slug":"estudio-de-los-oxidos-del-tipo-tr2nio4delta-tr-la-pr-y-nd-mediante-tecnicas-de-haces-de-neutrones","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/estudio-de-los-oxidos-del-tipo-tr2nio4delta-tr-la-pr-y-nd-mediante-tecnicas-de-haces-de-neutrones\/","title":{"rendered":"Estudio de los oxidos del tipo tr2nio4+delta (tr = la, pr y nd) mediante tecnicas de haces de neutrones."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Fernandez Diaz M. Teresa <\/strong><\/h2>\n<p>Se ha estudiado el comportamiento de los oxidos tr2nio4 (tr=la,pr y nd) desde el punto de vista estructural y magnetico mediante dispersion de neutrones. Los compuestos estequiometricos presentan dos transiciones de fase. Una de segundo orden, a alta temperatura, de i4\/mmm bmab. La transicion de baja temperatura es de primer orden y la estructura cambia de bmab a p42\/ncm.  desde el punto de vista magnetico, los compuestos estequiometricos se ordenan antiferromagneticamente con tn  325 -5k. En el compuesto de nd y pr se produce orden de la tierra rara y en el ultimo caso tiene lugar una reorientacion de espin. En los compuestos oxidados se ha determinado la posicion del oxigeno intersticial (1\/4,1\/4,z; z  0.25). En este ultimo tipo de compuestos no se ha observado orden magnetico tridimensional.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estudio de los oxidos del tipo tr2nio4+delta (tr = la, pr y nd) mediante tecnicas de haces de neutrones.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estudio de los oxidos del tipo tr2nio4+delta (tr = la, pr y nd) mediante tecnicas de haces de neutrones. <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Fernandez Diaz M. Teresa <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1991<\/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 Luis Martinez Pe\u00f1a<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Julio Gonzalo Gonzalez <\/li>\n<li>Javier Bermejo (vocal)<\/li>\n<li>Jes\u00fas Mendiola (vocal)<\/li>\n<li>Luis Vicent Jose (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Fernandez Diaz M. Teresa Se ha estudiado el comportamiento de los oxidos tr2nio4 (tr=la,pr y nd) desde [&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":[12152,199,1008,5437],"tags":[251878,251879,235745,1011,14623,15101],"class_list":["post-137335","post","type-post","status-publish","format-standard","hentry","category-cristalografia","category-fisica","category-fisica-del-estado-solido","category-superconductores","tag-fernandez-diaz-m-teresa","tag-javier-bermejo","tag-jesus-mendiola","tag-jose-luis-Martinez-pena","tag-julio-gonzalo-gonzalez","tag-luis-vicent-jose"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/137335","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=137335"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/137335\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=137335"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=137335"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=137335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}