{"id":1193,"date":"2021-04-09T09:50:54","date_gmt":"2021-04-09T08:50:54","guid":{"rendered":"https:\/\/blog.uclm.es\/apnano\/?p=1193"},"modified":"2022-10-24T08:55:03","modified_gmt":"2022-10-24T08:55:03","slug":"1193","status":"publish","type":"post","link":"https:\/\/blog.uclm.es\/apnano\/2021\/04\/09\/1193\/","title":{"rendered":"Reconfigurable Mechanical Anisotropy and Super-Magnetostriction in Self-Assembled Magnetic Superstructures"},"content":{"rendered":"\n<p class=\"has-text-align-left\"><span style=\"font-size: large\"><strong>&nbsp;<\/strong><\/span><br>Our group, in collaboration with NTNU-Trondheim and the University of Sydney, is contributing to the emerging field of enhanced mechanical properties in self\u2010assembled superstructures of magnetic nanoparticles. In two papers recently published in the high-IF journals <a rel=\"noopener noreferrer\" href=\"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/adfm.201904825\" target=\"_blank\">Advanced Functional Materials<\/a> and <a rel=\"noopener noreferrer\" href=\"https:\/\/onlinelibrary.wiley.com\/doi\/full\/10.1002\/advs.202002683\" target=\"_blank\">Advanced Science<\/a>, we have demonstrated how the mechanical properties of self\u2010assembled magnetic nanocubes can be controlled by the nanoparticle magnetocrystalline anisotropy (MA) and the superstructure shape anisotropy. A low MA\u2010to\u2010dipolar energy ratio, as found in iron oxide systems (superparamagnetic at RT), favours isotropic mechanical superstructure stabilization, whereas a high ratio yields magnetically blocked nanoparticle macrospins which can give rise to metastable superferromagnetism, as expected in cobalt ferrite simple cubic supercrystals. Such full parallel alignment of the particle moments is shown to induce mechanical anisotropy, where the superior high\u2010strength axis (as that present naturally in wood) can be remotely reconfigured by means of an applied magnetic field (see left figure). The new concepts developed here pave the way for the experimental realization of smart magneto\u2010micromechanical systems (based, e.g., on the permanent super\u2010magnetostriction effect illustrated in the right figure here) and inspire new design rules for applied functional materials.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"716\" height=\"347\" src=\"https:\/\/blog.uclm.es\/apnano\/wp-content\/uploads\/sites\/37\/2021\/04\/Self-asembled-superstructure-and-supermagnetostiction-effect.jpg\" alt=\"\" class=\"wp-image-1199\" srcset=\"https:\/\/blog.uclm.es\/apnano\/wp-content\/uploads\/sites\/37\/2021\/04\/Self-asembled-superstructure-and-supermagnetostiction-effect.jpg 716w, https:\/\/blog.uclm.es\/apnano\/wp-content\/uploads\/sites\/37\/2021\/04\/Self-asembled-superstructure-and-supermagnetostiction-effect-300x145.jpg 300w\" sizes=\"auto, (max-width: 716px) 100vw, 716px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp;Our group, in collaboration with NTNU-Trondheim and the University of Sydney, is contributing to the emerging field of enhanced mechanical properties in self\u2010assembled superstructures of magnetic nanoparticles. In two papers recently published in the high-IF journals Advanced Functional Materials and Advanced Science, we have demonstrated how the mechanical properties of self\u2010assembled magnetic nanocubes can be &hellip; <a href=\"https:\/\/blog.uclm.es\/apnano\/2021\/04\/09\/1193\/\" class=\"more-link\">Seguir leyendo <span class=\"screen-reader-text\">Reconfigurable Mechanical Anisotropy and Super-Magnetostriction in Self-Assembled Magnetic Superstructures<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":186,"featured_media":1199,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-1193","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.uclm.es\/apnano\/wp-json\/wp\/v2\/posts\/1193","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.uclm.es\/apnano\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.uclm.es\/apnano\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.uclm.es\/apnano\/wp-json\/wp\/v2\/users\/186"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.uclm.es\/apnano\/wp-json\/wp\/v2\/comments?post=1193"}],"version-history":[{"count":2,"href":"https:\/\/blog.uclm.es\/apnano\/wp-json\/wp\/v2\/posts\/1193\/revisions"}],"predecessor-version":[{"id":1311,"href":"https:\/\/blog.uclm.es\/apnano\/wp-json\/wp\/v2\/posts\/1193\/revisions\/1311"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.uclm.es\/apnano\/wp-json\/wp\/v2\/media\/1199"}],"wp:attachment":[{"href":"https:\/\/blog.uclm.es\/apnano\/wp-json\/wp\/v2\/media?parent=1193"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.uclm.es\/apnano\/wp-json\/wp\/v2\/categories?post=1193"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.uclm.es\/apnano\/wp-json\/wp\/v2\/tags?post=1193"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}