{"id":7834,"date":"2026-10-26T16:31:31","date_gmt":"2026-10-26T15:31:31","guid":{"rendered":"https:\/\/www.cnrs-imn.fr\/event\/hiroshi-takatsu-seminar\/"},"modified":"2026-10-26T16:31:31","modified_gmt":"2026-10-26T15:31:31","slug":"hiroshi-takatsu-seminar","status":"publish","type":"tribe_events","link":"https:\/\/www.cnrs-imn.fr\/en\/event\/hiroshi-takatsu-seminar\/","title":{"rendered":"Hiroshi Takatsu Seminar"},"content":{"rendered":"<p style=\"text-align: center;\"><strong>Exploring Quantum Materials through Anion Chemistry and External Stimuli<\/strong><\/p>\n<p style=\"text-align: center;\"><img decoding=\"async\" class=\"alignnone wp-image-7832 size-full\" src=\"https:\/\/www.cnrs-imn.fr\/wp-content\/uploads\/2026\/10\/Hiroshi_Takatsu.jpg\" alt=\"\" width=\"150\" height=\"150\" srcset=\"https:\/\/www.cnrs-imn.fr\/wp-content\/uploads\/2026\/10\/Hiroshi_Takatsu-66x66.jpg 66w, https:\/\/www.cnrs-imn.fr\/wp-content\/uploads\/2026\/10\/Hiroshi_Takatsu.jpg 150w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><br \/>\n<strong>Hiroshi Takatsu<\/strong><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.cse.t.kyoto-u.ac.jp\/en\" target=\"_blank\" rel=\"noopener\">Department of Chemical Science and Engineering, Graduate School of Engineering, Kyoto University, Kyoto, Japan<\/a><\/p>\n<p align=\"justify\"><strong>Abstract<\/strong><\/p>\n<p align=\"justify\">Conventional solid-state chemistry controls crystal structures and electronic states through chemical composition and temperature. Mixed-anion chemistry expands this framework by combining anions with different sizes, charges, and bonding characteristics, while external stimuli provide additional pathways to access structures and phases that are difficult to achieve under conventional synthetic conditions. <\/p>\n<p align=\"justify\">In this seminar, I will present examples from our recent work. First, in the oxyhydride EuVO <sub>2<\/sub> H, pressure and epitaxial strain induce intersite charge transfer between EuH and VO <sub>2<\/sub> layers, resulting in metallization, enhanced ferromagnetism, and pronounced magnetic anisotropy [1-3]. Second, ionic-liquid gating offers a different way to control anion chemistry, enabling electrochemical F <sup>\u2212<\/sup> -ion insertion into oxygen-deficient oxide films and yielding functional oxyfluorides [4]. Finally, a topochemical reaction transforms Mo <sub>2<\/sub> Ta <sub>2<\/sub> O <sub>11<\/sub> into Mo <sub>3<\/sub> Ta <sub>2<\/sub> O <sub>10<\/sub> N through a double-to-single-layer conversion [5], which breaks the usual one-to-one structural correspondence between precursor and product structures and produces an itinerant two-dimensional kagom\u00e9 system.   <\/p>\n<p>Together, these studies demonstrate how anion chemistry and external stimuli can reshape both reaction pathways and energy landscapes, opening the door to structures and electronic states that are beyond the reach of conventional synthesis.<\/p>\n<p>&nbsp;<\/p>\n<p>[1] M. Namba, H. Takatsu*, H. Kageyama*, <em>et al<\/em>., <em>J. Am. Chem. Soc.<\/em> <strong>2023<\/strong>, 145, 21807\u201321816.<br \/>\n[2] M. Namba, H. Takatsu*, H. Kageyama*, <em>et al<\/em>., <em>Chem. Mater.<\/em> <strong>2024<\/strong>, 36, 3918\u20133924.<br \/>\n[3] H. Takatsu*, M. Namba, H. Kageyama*, <em>et al<\/em>., <em>Inorg. Chem<\/em>. <strong>2026<\/strong>, 65, 2767\u20132773.<br \/>\n[4] M. Namba, H. Takatsu*, H. Kageyama*, <em>et al<\/em>., <em>Chem. Mater.<\/em> <strong>2024<\/strong>, 36, 2076\u20132084.<br \/>\n[5] R. Higuchi, H. Takatsu*, H. Kageyama*, <em>et al<\/em>., <em>J. Am. Chem. Soc.<\/em> <strong>2025<\/strong>, 147, 27576\u201327585.<\/p>\n<p><strong>Contact<\/strong>: Shunsuke Sasaki (PMN)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Exploring Quantum Materials through Anion Chemistry and External Stimuli Hiroshi  [&#8230;]<\/p>\n","protected":false},"author":4,"featured_media":7835,"template":"","meta":{"_tribe_events_status":"","_tribe_events_status_reason":"","footnotes":""},"tags":[],"tribe_events_cat":[],"class_list":["post-7834","tribe_events","type-tribe_events","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hiroshi Takatsu Seminar - IMN<\/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:\/\/www.cnrs-imn.fr\/event\/hiroshi-takatsu-seminar\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hiroshi Takatsu Seminar - IMN\" \/>\n<meta property=\"og:description\" content=\"Exploring Quantum Materials through Anion Chemistry and External Stimuli Hiroshi [...]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.cnrs-imn.fr\/event\/hiroshi-takatsu-seminar\/\" \/>\n<meta property=\"og:site_name\" content=\"IMN\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.cnrs-imn.fr\/wp-content\/uploads\/2026\/10\/Hiroshi_Takatsu.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"150\" \/>\n\t<meta property=\"og:image:height\" content=\"150\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.cnrs-imn.fr\\\/event\\\/hiroshi-takatsu-seminar\\\/\",\"url\":\"https:\\\/\\\/www.cnrs-imn.fr\\\/event\\\/hiroshi-takatsu-seminar\\\/\",\"name\":\"Hiroshi Takatsu Seminar - IMN\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.cnrs-imn.fr\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.cnrs-imn.fr\\\/event\\\/hiroshi-takatsu-seminar\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.cnrs-imn.fr\\\/event\\\/hiroshi-takatsu-seminar\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.cnrs-imn.fr\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/Hiroshi_Takatsu.jpg\",\"datePublished\":\"2026-10-26T15:31:31+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.cnrs-imn.fr\\\/event\\\/hiroshi-takatsu-seminar\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.cnrs-imn.fr\\\/event\\\/hiroshi-takatsu-seminar\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.cnrs-imn.fr\\\/event\\\/hiroshi-takatsu-seminar\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.cnrs-imn.fr\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/Hiroshi_Takatsu.jpg\",\"contentUrl\":\"https:\\\/\\\/www.cnrs-imn.fr\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/Hiroshi_Takatsu.jpg\",\"width\":150,\"height\":150},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.cnrs-imn.fr\\\/event\\\/hiroshi-takatsu-seminar\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\\\/\\\/www.cnrs-imn.fr\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u00c9v\u00e8nements\",\"item\":\"https:\\\/\\\/www.cnrs-imn.fr\\\/events\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Hiroshi Takatsu Seminar\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.cnrs-imn.fr\\\/#website\",\"url\":\"https:\\\/\\\/www.cnrs-imn.fr\\\/\",\"name\":\"IMN\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.cnrs-imn.fr\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Hiroshi Takatsu Seminar - IMN","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:\/\/www.cnrs-imn.fr\/event\/hiroshi-takatsu-seminar\/","og_locale":"en_US","og_type":"article","og_title":"Hiroshi Takatsu Seminar - IMN","og_description":"Exploring Quantum Materials through Anion Chemistry and External Stimuli Hiroshi [...]","og_url":"https:\/\/www.cnrs-imn.fr\/event\/hiroshi-takatsu-seminar\/","og_site_name":"IMN","og_image":[{"width":150,"height":150,"url":"https:\/\/www.cnrs-imn.fr\/wp-content\/uploads\/2026\/10\/Hiroshi_Takatsu.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.cnrs-imn.fr\/event\/hiroshi-takatsu-seminar\/","url":"https:\/\/www.cnrs-imn.fr\/event\/hiroshi-takatsu-seminar\/","name":"Hiroshi Takatsu Seminar - IMN","isPartOf":{"@id":"https:\/\/www.cnrs-imn.fr\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.cnrs-imn.fr\/event\/hiroshi-takatsu-seminar\/#primaryimage"},"image":{"@id":"https:\/\/www.cnrs-imn.fr\/event\/hiroshi-takatsu-seminar\/#primaryimage"},"thumbnailUrl":"https:\/\/www.cnrs-imn.fr\/wp-content\/uploads\/2026\/10\/Hiroshi_Takatsu.jpg","datePublished":"2026-10-26T15:31:31+00:00","breadcrumb":{"@id":"https:\/\/www.cnrs-imn.fr\/event\/hiroshi-takatsu-seminar\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.cnrs-imn.fr\/event\/hiroshi-takatsu-seminar\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.cnrs-imn.fr\/event\/hiroshi-takatsu-seminar\/#primaryimage","url":"https:\/\/www.cnrs-imn.fr\/wp-content\/uploads\/2026\/10\/Hiroshi_Takatsu.jpg","contentUrl":"https:\/\/www.cnrs-imn.fr\/wp-content\/uploads\/2026\/10\/Hiroshi_Takatsu.jpg","width":150,"height":150},{"@type":"BreadcrumbList","@id":"https:\/\/www.cnrs-imn.fr\/event\/hiroshi-takatsu-seminar\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/www.cnrs-imn.fr\/en\/"},{"@type":"ListItem","position":2,"name":"\u00c9v\u00e8nements","item":"https:\/\/www.cnrs-imn.fr\/events\/"},{"@type":"ListItem","position":3,"name":"Hiroshi Takatsu Seminar"}]},{"@type":"WebSite","@id":"https:\/\/www.cnrs-imn.fr\/#website","url":"https:\/\/www.cnrs-imn.fr\/","name":"IMN","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.cnrs-imn.fr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.cnrs-imn.fr\/en\/wp-json\/wp\/v2\/tribe_events\/7834","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cnrs-imn.fr\/en\/wp-json\/wp\/v2\/tribe_events"}],"about":[{"href":"https:\/\/www.cnrs-imn.fr\/en\/wp-json\/wp\/v2\/types\/tribe_events"}],"author":[{"embeddable":true,"href":"https:\/\/www.cnrs-imn.fr\/en\/wp-json\/wp\/v2\/users\/4"}],"version-history":[{"count":0,"href":"https:\/\/www.cnrs-imn.fr\/en\/wp-json\/wp\/v2\/tribe_events\/7834\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cnrs-imn.fr\/en\/wp-json\/wp\/v2\/media\/7835"}],"wp:attachment":[{"href":"https:\/\/www.cnrs-imn.fr\/en\/wp-json\/wp\/v2\/media?parent=7834"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cnrs-imn.fr\/en\/wp-json\/wp\/v2\/tags?post=7834"},{"taxonomy":"tribe_events_cat","embeddable":true,"href":"https:\/\/www.cnrs-imn.fr\/en\/wp-json\/wp\/v2\/tribe_events_cat?post=7834"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}