{"id":553,"date":"2023-10-03T15:06:18","date_gmt":"2023-10-03T19:06:18","guid":{"rendered":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/?p=553"},"modified":"2023-10-03T15:10:16","modified_gmt":"2023-10-03T19:10:16","slug":"geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films","status":"publish","type":"post","link":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\/","title":{"rendered":"Geometric influence on the net magnetic moment in LaCoO3 thin films"},"content":{"rendered":"

\"\"<\/p>\n

In bulk form, LaCoO3 is not magnetic. In thin film form, this compound can become magnetic. Although magnetism has traditionally been attributed to a thermally-induced intermediate state or to oxygen vacancy defects, we find that strain causes antiferromagnetic interactions at high temperatures, and a weak ferromagnetism at low temperatures. The different magnetic behaviors of LaCoO3 films grown on LaAlO3 and SrTiO3 are related to the Co-O-Co bond angles and the constraints imposed on the Co-O bond lengths by the substrate geometries. Long-range magnetic order occurs below T ~ 90 K when the Co-O-Co bond angle is greater than 163 degrees, consistent with the behavior of bulk and nanoparticles forms of LaCoO3. A LaAlO3 substrate prevents magnetic long-range order at low temperatures near the film-substrate interface and collinear antiferromagnetic sublattices away from the interface. At low temperatures, the antiferromagnetically ordered sublattices are non-collinear in films grown on SrTiO3 substrates, leading to a significant net moment. Films gown on LaAlO3 with a SrTiO3 strained buffer layer at the interface are not magnetic, showing that a purely chemical interaction with the SrTiO3 is not responsible for the observed phenomena.<\/p>\n

This article was published in Journal of Materials Research and is available here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

In bulk form, LaCoO3 is not magnetic. In thin film form, this compound can become magnetic. Although magnetism has traditionally been attributed to a thermally-induced intermediate state or to oxygen Continue Reading →<\/a><\/p>\n","protected":false},"author":84,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[6,1],"tags":[],"class_list":["post-553","post","type-post","status-publish","format-standard","hentry","category-publication","category-uncategorized"],"yoast_head":"\nGeometric influence on the net magnetic moment in LaCoO3 thin films -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sciences.ucf.edu\/physics\/afmspin\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Geometric influence on the net magnetic moment in LaCoO3 thin films -\" \/>\n<meta property=\"og:description\" content=\"In bulk form, LaCoO3 is not magnetic. In thin film form, this compound can become magnetic. Although magnetism has traditionally been attributed to a thermally-induced intermediate state or to oxygen Continue Reading →\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sciences.ucf.edu\/physics\/afmspin\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\/\" \/>\n<meta property=\"article:published_time\" content=\"2023-10-03T19:06:18+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-10-03T19:10:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-content\/uploads\/sites\/31\/2023\/10\/Picture3-300x208.png\" \/>\n<meta name=\"author\" content=\"Gregory Fritjofson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Gregory Fritjofson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\\\/\"},\"author\":{\"name\":\"Gregory Fritjofson\",\"@id\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/#\\\/schema\\\/person\\\/dfe9c061eec5b3ae750208f34e51ca90\"},\"headline\":\"Geometric influence on the net magnetic moment in LaCoO3 thin films\",\"datePublished\":\"2023-10-03T19:06:18+00:00\",\"dateModified\":\"2023-10-03T19:10:16+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\\\/\"},\"wordCount\":207,\"image\":{\"@id\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/wp-content\\\/uploads\\\/sites\\\/31\\\/2023\\\/10\\\/Picture3-300x208.png\",\"articleSection\":[\"Publication\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\\\/\",\"url\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\\\/\",\"name\":\"Geometric influence on the net magnetic moment in LaCoO3 thin films -\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/wp-content\\\/uploads\\\/sites\\\/31\\\/2023\\\/10\\\/Picture3-300x208.png\",\"datePublished\":\"2023-10-03T19:06:18+00:00\",\"dateModified\":\"2023-10-03T19:10:16+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/#\\\/schema\\\/person\\\/dfe9c061eec5b3ae750208f34e51ca90\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\\\/#primaryimage\",\"url\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/wp-content\\\/uploads\\\/sites\\\/31\\\/2023\\\/10\\\/Picture3.png\",\"contentUrl\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/wp-content\\\/uploads\\\/sites\\\/31\\\/2023\\\/10\\\/Picture3.png\",\"width\":908,\"height\":630,\"caption\":\"Graph showing magnetization (M, in \u00b5B\\\/Co) versus temperature (T, in K) for different sample thicknesses (7.8 nm, 10.3 nm, 22.3 nm, 25.7 nm). In-plane and out-of-plane data are displayed with an inset graph of thickness vs N\u00e9el temperature (TN).\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/#website\",\"url\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/\",\"name\":\"\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/#\\\/schema\\\/person\\\/dfe9c061eec5b3ae750208f34e51ca90\",\"name\":\"Gregory Fritjofson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/d69d9a6f73b3b6c0bcb07d2dccdb90a51eddff27039cbb9b8475a2c1fa28df07?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/d69d9a6f73b3b6c0bcb07d2dccdb90a51eddff27039cbb9b8475a2c1fa28df07?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/d69d9a6f73b3b6c0bcb07d2dccdb90a51eddff27039cbb9b8475a2c1fa28df07?s=96&d=mm&r=g\",\"caption\":\"Gregory Fritjofson\"},\"url\":\"https:\\\/\\\/sciences.ucf.edu\\\/physics\\\/afmspin\\\/author\\\/gr464854\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Geometric influence on the net magnetic moment in LaCoO3 thin films -","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\/","og_locale":"en_US","og_type":"article","og_title":"Geometric influence on the net magnetic moment in LaCoO3 thin films -","og_description":"In bulk form, LaCoO3 is not magnetic. In thin film form, this compound can become magnetic. Although magnetism has traditionally been attributed to a thermally-induced intermediate state or to oxygen Continue Reading →","og_url":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\/","article_published_time":"2023-10-03T19:06:18+00:00","article_modified_time":"2023-10-03T19:10:16+00:00","og_image":[{"url":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-content\/uploads\/sites\/31\/2023\/10\/Picture3-300x208.png","type":"","width":"","height":""}],"author":"Gregory Fritjofson","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Gregory Fritjofson","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\/#article","isPartOf":{"@id":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\/"},"author":{"name":"Gregory Fritjofson","@id":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/#\/schema\/person\/dfe9c061eec5b3ae750208f34e51ca90"},"headline":"Geometric influence on the net magnetic moment in LaCoO3 thin films","datePublished":"2023-10-03T19:06:18+00:00","dateModified":"2023-10-03T19:10:16+00:00","mainEntityOfPage":{"@id":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\/"},"wordCount":207,"image":{"@id":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\/#primaryimage"},"thumbnailUrl":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-content\/uploads\/sites\/31\/2023\/10\/Picture3-300x208.png","articleSection":["Publication"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\/","url":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\/","name":"Geometric influence on the net magnetic moment in LaCoO3 thin films -","isPartOf":{"@id":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/#website"},"primaryImageOfPage":{"@id":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\/#primaryimage"},"image":{"@id":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\/#primaryimage"},"thumbnailUrl":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-content\/uploads\/sites\/31\/2023\/10\/Picture3-300x208.png","datePublished":"2023-10-03T19:06:18+00:00","dateModified":"2023-10-03T19:10:16+00:00","author":{"@id":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/#\/schema\/person\/dfe9c061eec5b3ae750208f34e51ca90"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/sciences.ucf.edu\/physics\/afmspin\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/geometric-influence-on-the-net-magnetic-moment-in-lacoo3-thin-films\/#primaryimage","url":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-content\/uploads\/sites\/31\/2023\/10\/Picture3.png","contentUrl":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-content\/uploads\/sites\/31\/2023\/10\/Picture3.png","width":908,"height":630,"caption":"Graph showing magnetization (M, in \u00b5B\/Co) versus temperature (T, in K) for different sample thicknesses (7.8 nm, 10.3 nm, 22.3 nm, 25.7 nm). In-plane and out-of-plane data are displayed with an inset graph of thickness vs N\u00e9el temperature (TN)."},{"@type":"WebSite","@id":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/#website","url":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/","name":"","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/#\/schema\/person\/dfe9c061eec5b3ae750208f34e51ca90","name":"Gregory Fritjofson","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/d69d9a6f73b3b6c0bcb07d2dccdb90a51eddff27039cbb9b8475a2c1fa28df07?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/d69d9a6f73b3b6c0bcb07d2dccdb90a51eddff27039cbb9b8475a2c1fa28df07?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/d69d9a6f73b3b6c0bcb07d2dccdb90a51eddff27039cbb9b8475a2c1fa28df07?s=96&d=mm&r=g","caption":"Gregory Fritjofson"},"url":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/author\/gr464854\/"}]}},"_links":{"self":[{"href":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-json\/wp\/v2\/posts\/553","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-json\/wp\/v2\/users\/84"}],"replies":[{"embeddable":true,"href":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-json\/wp\/v2\/comments?post=553"}],"version-history":[{"count":2,"href":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-json\/wp\/v2\/posts\/553\/revisions"}],"predecessor-version":[{"id":556,"href":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-json\/wp\/v2\/posts\/553\/revisions\/556"}],"wp:attachment":[{"href":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-json\/wp\/v2\/media?parent=553"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-json\/wp\/v2\/categories?post=553"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-json\/wp\/v2\/tags?post=553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}