{"id":113494,"date":"2018-03-11T10:40:57","date_gmt":"2018-03-11T10:40:57","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/crystal-structure-and-phase-transition-studies-in-perovskite-type-oxides-using-powder-diffraction-techniques-and-symmetry-mode-analysis-srlnmruo6-lnlaprnd-mzncomgnife-and-a-ln2cuti2o9-ac\/"},"modified":"2018-03-11T10:40:57","modified_gmt":"2018-03-11T10:40:57","slug":"crystal-structure-and-phase-transition-studies-in-perovskite-type-oxides-using-powder-diffraction-techniques-and-symmetry-mode-analysis-srlnmruo6-lnlaprnd-mzncomgnife-and-a-ln2cuti2o9-ac","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/pais-vasco-euskal-herriko-unibertsitatea\/crystal-structure-and-phase-transition-studies-in-perovskite-type-oxides-using-powder-diffraction-techniques-and-symmetry-mode-analysis-srlnmruo6-lnlaprnd-mzncomgnife-and-a-ln2cuti2o9-ac\/","title":{"rendered":"Crystal structure and phase transition studies in perovskite-type oxides using powder-diffraction techniques and symmetry-mode analysis. srlnmruo6 (ln=la,pr,nd; m=zn,co,mg,ni,fe) and a ln2cuti2o9 (a=c"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Edurne Iturbe Zabalo <\/strong><\/h2>\n<p>La tesis se ha centrado en la s\u00edntesis y caracterizaci\u00f3n estructural de materiales tipo perovskita: srlnmruo6 (ln=la,pr,nd; m=zn,co,mg,ni,fe) y aln2cuti2o9 (a=ca,ba; ln=la,pr,nd,sm). El estudio de las estructuras de los materiales se ha realizado mediante el an\u00e1lisis de los patrones de difracci\u00f3n en polvo de rayos-x, sincrotr\u00f3n y\/o neutrones. En el refinamiento por el m\u00e9todo de rietveld de las estructuras se han sustituido las coordenadas at\u00f3micas (el m\u00e9todo m\u00e1s com\u00fan), por coordenadas colectivas: las amplitudes de los modos que describen la distorsi\u00f3n de la fase prototipo. Los resultados generales para la serie srlnmruo6 (ln=la,pr,nd; m=zn,co,mg,ni) a temperatura ambiente se ha recogido en un diagrama en el que se han indicado las amplitudes de los modos que transforman de acuerdo a las irreps en funci\u00f3n del factor de tolerancia, ya que todos ellos cristalizan en la misma fase monocl\u00ednica (p21\/n); y a temperaturas altas se ha construido un diagrama de fase. Los materiales srlnferuo6 (ln=la,pr,nd) y caln2cuti2o9 cristalizan en la fase ortorr\u00f3mbica pbnm a temperatura ambiente; mientras que baln2cuti2o9 tienen una estructura m\u00e1s sim\u00e9trica, i4\/mcm. A altas temperaturas se han identificado las transiciones de fase inducidas por el cambio de temperatura.A temperaturas bajas se han analizado las estructuras magn\u00e9ticas de algunos de los compuestos mediante difracci\u00f3n de neutrones.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Crystal structure and phase transition studies in perovskite-type oxides using powder-diffraction techniques and symmetry-mode analysis. srlnmruo6 (ln=la,pr,nd; m=zn,co,mg,ni,fe) and a ln2cuti2o9 (a=c<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Crystal structure and phase transition studies in perovskite-type oxides using powder-diffraction techniques and symmetry-mode analysis. srlnmruo6 (ln=la,pr,nd; m=zn,co,mg,ni,fe) and a ln2cuti2o9 (a=c <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Edurne Iturbe Zabalo <\/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 30\/11\/2012<\/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>Josu Mirena Igartua Aldamiz<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: gotzon Madariaga menendez <\/li>\n<li>bouchaib Manoun &#8212; (vocal)<\/li>\n<li>Santiago Garcia granda (vocal)<\/li>\n<li>german Rafael Castro castro (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Edurne Iturbe Zabalo La tesis se ha centrado en la s\u00edntesis y caracterizaci\u00f3n estructural de materiales tipo [&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":[20483,12909],"tags":[198139,225354,225355,119731,198137,25428],"class_list":["post-113494","post","type-post","status-publish","format-standard","hentry","category-estructura-cristalina","category-pais-vasco-euskal-herriko-unibertsitatea","tag-bouchaib-manoun","tag-edurne-iturbe-zabalo","tag-german-rafael-castro-castro","tag-gotzon-madariaga-menendez","tag-josu-mirena-igartua-aldamiz","tag-santiago-garcia-granda"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/113494","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=113494"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/113494\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=113494"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=113494"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=113494"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}