{"id":78545,"date":"2025-12-18T14:15:18","date_gmt":"2025-12-18T08:45:18","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=78545"},"modified":"2025-12-20T13:33:13","modified_gmt":"2025-12-20T08:03:13","slug":"altermagnetism-in-ruo%e2%82%82","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/altermagnetism-in-ruo%e2%82%82\/","title":{"rendered":"Altermagnetism in RuO\u2082"},"content":{"rendered":"<h2><strong>Altermagnetism in RuO\u2082 Latest News<\/strong><\/h2>\n<p>Recently, the Japanese researchers have experimentally confirmed ruthenium dioxide as an altermagnet, a third fundamental magnetic class distinct from ferromagnets and antiferromagnets.<\/p>\n<h2><strong>About Altermagnetism and RuO\u2082 Discovery<\/strong><\/h2>\n<ul>\n<li><strong>Altermagnetism<\/strong> is now recognised as the <strong>third fundamental class of magnetism<\/strong>, distinct from <strong>ferromagnetism<\/strong> and <strong>antiferromagnetism<\/strong>.<\/li>\n<li>In <strong>altermagnetic materials<\/strong>, <strong>magnetic moments alternate<\/strong>, but their arrangement follows <strong>complex symmetry operations<\/strong> such as <strong>rotation and reflection<\/strong>, rather than simple up\u2013down cancellation.<\/li>\n<li>This leads to a <strong>net-zero external magnetic field<\/strong>, similar to antiferromagnets, but with <strong>internal electronic spin splitting<\/strong> comparable to ferromagnets.<\/li>\n<li><strong>Ruthenium dioxide (RuO\u2082)<\/strong> thin films have been <strong>experimentally demonstrated<\/strong> to exhibit <strong>true altermagnetism<\/strong>, resolving long-standing global inconsistencies.<\/li>\n<li>The discovery was made by a <strong>joint research team<\/strong> from <strong>National Institute for Materials Science (Japan)<\/strong>, <strong>University of Tokyo<\/strong>, <strong>Kyoto Institute of Technology<\/strong>, and <strong>Tohoku University<\/strong>, and published in <strong>Nature Communications<\/strong>.<\/li>\n<li>The team fabricated <strong>single-orientation (single-variant) RuO\u2082 thin films<\/strong> on <strong>sapphire substrates<\/strong>, ensuring <strong>uniform crystallographic orientation<\/strong>, which was crucial for conclusive verification.<\/li>\n<li>Using <strong>X-ray Magnetic Linear Dichroism (XMLD)<\/strong>, researchers confirmed <strong>spin arrangements<\/strong> where <strong>net magnetisation cancels (no N\u2013S poles)<\/strong>.<\/li>\n<li>The study also observed <strong>spin-split magnetoresistance<\/strong>, electrically verifying the <strong>spin-splitting electronic structure<\/strong>, a key signature of altermagnetism.<\/li>\n<li>The experimental results were found to be consistent with <strong>first-principles calculations<\/strong> of <strong>magneto-crystalline anisotropy<\/strong>, strengthening theoretical validation.<\/li>\n<\/ul>\n<p><strong>Source: <\/strong><a href=\"https:\/\/phys.org\/news\/2025-12-altermagnetism-ruo-thin-magnetic-material.html\" target=\"_blank\" rel=\"nofollow noopener\"><strong>PHY<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Altermagnetism is now recognised as the third fundamental class of magnetism, distinct from ferromagnetism and antiferromagnetism. Read more about Altermagnetism in RuO\u2082, Latest News.<\/p>\n","protected":false},"author":8,"featured_media":78529,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[4282,21,22,23],"class_list":{"0":"post-78545","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"tag-altermagnetism-in-ruo","9":"tag-prelims-pointers","10":"tag-upsc-current-affairs","11":"tag-upsc-prelims-current-affairs","12":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/78545","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=78545"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/78545\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/78529"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=78545"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=78545"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=78545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}