{"id":154876,"date":"2026-01-12T17:15:05","date_gmt":"2026-01-12T17:15:05","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/desacomodacion-magnetica-en-algunos-medios-cristalinos-y-amorfos\/"},"modified":"2026-01-12T17:15:05","modified_gmt":"2026-01-12T17:15:05","slug":"desacomodacion-magnetica-en-algunos-medios-cristalinos-y-amorfos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/desacomodacion-magnetica-en-algunos-medios-cristalinos-y-amorfos\/","title":{"rendered":"\u00abdesacomodacion magnetica en algunos medios cristalinos y amorfos\u00bb"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Diego Martinez Hernandez <\/strong><\/h2>\n<p>Se ha medido la desacomodacion magnetica isoterma de cintas amorfas comerciales fe40 ni40 p14 b6 previamente sometidas a diversos tratamientos magneticos y termicos sucesivas observaciones de la estructura superficial de dominios magneticos han evidenciado una evolucion de la misma que debe tenerse en cuenta en el fenomeno global de relajacion magnetica de este amorfo. Por otra parte, muestras ceramicas con diferentes contenidos de bario presentan espectros de desacomodacion (medidos entre 30 y 450 k) con diferentes picos de relajacion y complejidad creciente con la presencia de bario. Identificamos los maximos observados a 300 y 370 k con los picos ii y iii conocidos en otros sistemas. Suponiendo que se trata de procesos termicamente activados y que una funcion de distribucion tipo caja constituye una aproximacion valida, se ha obtenido para el proceso a 300 k una energia media de 0.93 ev y z0 10-12 s; para el proceso a 370k, una energia similar y un factor preexponencial mayor (del orden de 10-12 s). La fase responsable de la relajacion es magnetita substituida. A mayores concentraciones de bario, este entra ademas probablemente como intersticial en la espinela.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>\u00abdesacomodacion magnetica en algunos medios cristalinos y amorfos\u00bb<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 \u00abdesacomodacion magnetica en algunos medios cristalinos y amorfos\u00bb <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Diego Martinez Hernandez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Santiago de compostela<\/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>Jose Rivas Rey<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Marcos Tejedor Gancedo <\/li>\n<li>Manuel Arturo L\u00f3pez Quintela (vocal)<\/li>\n<li> I\u00f1iguez De La Torre Y Bayo Jos\u00e9 I. (vocal)<\/li>\n<li>Carmen Pereira Fuentes (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Diego Martinez Hernandez Se ha medido la desacomodacion magnetica isoterma de cintas amorfas comerciales fe40 ni40 p14 [&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":[332,987,199,740,1125,977,1126],"tags":[115602,223387,53093,2493,2751,745],"class_list":["post-154876","post","type-post","status-publish","format-standard","hentry","category-ciencias-tecnologicas","category-electromagnetismo","category-fisica","category-magnetismo","category-propiedades-de-materiales","category-santiago-de-compostela","category-tecnologia-de-materiales","tag-carmen-pereira-fuentes","tag-diego-Martinez-hernandez","tag-iniguez-de-la-torre-y-bayo-jose-i","tag-jose-rivas-rey","tag-manuel-arturo-lopez-quintela","tag-marcos-tejedor-gancedo"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/154876","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=154876"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/154876\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=154876"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=154876"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=154876"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}