{"id":29285,"date":"2021-10-13T10:46:00","date_gmt":"2021-10-13T03:46:00","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=29285"},"modified":"2021-10-20T10:48:17","modified_gmt":"2021-10-20T03:48:17","slug":"cac-nha-khoa-hoc-che-tao-thanh-cong-vat-lieu-tu-tinh-2d-do-day-1-nguyen-tu","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/cac-nha-khoa-hoc-che-tao-thanh-cong-vat-lieu-tu-tinh-2d-do-day-1-nguyen-tu\/","title":{"rendered":"C\u00e1c nh\u00e0 khoa h\u1ecdc ch\u1ebf t\u1ea1o th\u00e0nh c\u00f4ng v\u1eadt li\u1ec7u t\u1eeb t\u00ednh 2D \u0111\u1ed9 d\u1ea7y 1 nguy\u00ean t\u1eed"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><strong>Nam ch\u00e2m 2D \u0111\u1ed9 d\u00e0y m\u1ed9t nguy\u00ean t\u1eed do TS Jie Yao thu\u1ed9c \u0110\u1ea1i h\u1ecdc California, Berkeley v\u00e0 Ph\u00f2ng th\u00ed nghi\u1ec7m Qu\u1ed1c gia Lawrence Berkeley c\u00f9ng c\u00e1c \u0111\u1ed3ng nghi\u1ec7p c\u00f3 th\u1ec3 th\u00fac \u0111\u1ea9y s\u1ef1 \u0111\u1ed9t ph\u00e1 \u0111\u1ed1i v\u1edbi nh\u1eefng b\u1ed9 nh\u1edb th\u1ebf h\u1ec7 ti\u1ebfp theo, m\u00e1y t\u00ednh, spintronics v\u00e0 v\u1eadt l\u00fd l\u01b0\u1ee3ng t\u1eed.<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/khds.1cdn.vn\/2021\/10\/13\/thinnest-magnet.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p><em>Nh\u00f3m nghi\u00ean c\u1ee9u Chen th\u00f4ng b\u00e1o v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng s\u1eaft t\u1eeb \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng c\u1ee7a v\u1eadt li\u1ec7u \u0111\u01a1n l\u1edbp Zn 1-x Co x O (gZCO) graphit 2D v\u1edbi t\u00ednh \u1ed5n \u0111\u1ecbnh m\u00f4i tr\u01b0\u1eddng m\u1ea1nh; nh\u1eefng qu\u1ea3 c\u1ea7u m\u00e0u \u0111\u1ecf, xanh lam v\u00e0 v\u00e0ng \u0111\u1ea1i di\u1ec7n cho c\u00e1c nguy\u00ean t\u1eed coban, oxy v\u00e0 k\u1ebdm. t\u01b0\u01a1ng \u1ee9ng. \u1ea2nh: Ph\u00f2ng th\u00ed nghi\u1ec7m Qu\u1ed1c gia Lawrence Berkeley.<\/em><\/p>\n\n\n\n<p>TS Yao cho bi\u1ebft: \u201cCh\u00fang t\u00f4i l\u00e0 ng\u01b0\u1eddi \u0111\u1ea7u ti\u00ean t\u1ea1o ra m\u1ed9t nam ch\u00e2m 2D nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, \u1ed5n \u0111\u1ecbnh v\u1ec1 m\u1eb7t h\u00f3a h\u1ecdc trong \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng&#8221;.<\/p>\n\n\n\n<p>Theo Rui Chen, nghi\u00ean c\u1ee9u sinh TS t\u1ea1i \u0110\u1ea1i h\u1ecdc California, Berkeley v\u00e0 Lawrence Berkeley, kh\u00e1m ph\u00e1 n\u00e0y \u0111\u1eb7c bi\u1ec7t \u1ea5n t\u01b0\u1ee3ng do kh\u00f4ng ch\u1ec9 ch\u1ee9ng minh \u0111\u01b0\u1ee3c s\u1ef1 t\u1ed3n t\u1ea1i t\u1eeb t\u00ednh 2D \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng m\u00e0 c\u00f2n kh\u00e1m ph\u00e1 ra c\u01a1 ch\u1ebf m\u1edbi, ch\u1ebf t\u1ea1o&nbsp;<a href=\"https:\/\/khoahocdoisong.vn\/Vat-lieu-tu-tinh-ptag.html\">v\u1eadt li\u1ec7u t\u1eeb t\u00ednh<\/a>&nbsp;2D.&nbsp;<\/p>\n\n\n\n<p>TS Yao v\u00e0 c\u00e1c \u0111\u1ed3ng nghi\u1ec7p \u0111\u00e3 t\u1ed5ng h\u1ee3p th\u00e0nh c\u00f4ng nam ch\u00e2m oxit k\u1ebdm van der Waals pha t\u1ea1p coban t\u1eeb dung d\u1ecbch graphene oxit, k\u1ebdm v\u00e0 coban. B\u1eb1ng gi\u1ea3i ph\u00e1p gia nhi\u1ec7t, sau m\u1ed9t v\u00e0i gi\u1edd \u0111\u1ed1t trong l\u00f2 \u1edf ph\u00f2ng th\u00ed nghi\u1ec7m, nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 bi\u1ebfn h\u1ed7n h\u1ee3p n\u00e0y th\u00e0nh l\u1edbp k\u1ebdm-oxit \u0111\u01a1n nguy\u00ean t\u1eed v\u1edbi m\u1ed9t s\u1ed1 nguy\u00ean t\u1eed coban n\u1eb1m gi\u1eefa c\u00e1c l\u1edbp graphene.<\/p>\n\n\n\n<p>B\u01b0\u1edbc cu\u1ed1i c\u00f9ng, graphene b\u1ecb \u0111\u1ed1t ch\u00e1y \u0111\u1ec3 l\u1ea1i m\u1ed9t l\u1edbp k\u1ebdm oxit pha t\u1ea1p coban \u0111\u01a1n nguy\u00ean t\u1eed.<\/p>\n\n\n\n<p>Lo\u1ea1i v\u1eadt li\u1ec7u m\u1edbi c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t v\u1edbi chi ph\u00ed th\u1ea5p.<\/p>\n\n\n\n<p>\u0110\u1ec3 kh\u1eb3ng \u0111\u1ecbnh l\u1edbp m\u00e0ng 2D thu \u0111\u01b0\u1ee3c ch\u1ec9 d\u00e0y 1 nguy\u00ean t\u1eed, c\u00e1c nh\u00e0 khoa h\u1ecdc th\u1ef1c hi\u1ec7n nhi\u1ec1u th\u00ed nghi\u1ec7m b\u1eb1ng k\u00ednh hi\u1ec3n vi \u0111i\u1ec7n t\u1eed qu\u00e9t (scaner) x\u00e1c \u0111\u1ecbnh h\u00ecnh th\u00e1i c\u1ee7a v\u1eadt li\u1ec7u v\u00e0 ch\u1ee5p \u1ea3nh b\u1eb1ng k\u00ednh hi\u1ec3n vi \u0111i\u1ec7n t\u1eed truy\u1ec1n qua \u0111\u1ec3 th\u0103m d\u00f2 t\u1eebng nguy\u00ean t\u1eed c\u1ee7a v\u1eadt li\u1ec7u.<\/p>\n\n\n\n<p>Nh\u1eefng th\u00ed nghi\u1ec7m cho th\u1ea5y h\u1ec7 th\u1ed1ng graphene-k\u1ebdm-oxit c\u00f3 t\u1eeb t\u00ednh y\u1ebfu v\u1edbi n\u1ed3ng \u0111\u1ed9 5-6% nguy\u00ean t\u1eed coban. N\u1ebfu gia t\u0103ng n\u1ed3ng \u0111\u1ed9 nguy\u00ean t\u1eed coban l\u00ean kho\u1ea3ng 12% s\u1ebd t\u1ea1o ra m\u1ed9t nam ch\u00e2m r\u1ea5t m\u1ea1nh.<\/p>\n\n\n\n<p>H\u1ec7 th\u1ed1ng t\u1eeb t\u00ednh 2D c\u00f3 m\u1ed9t c\u01a1 ch\u1ebf kh\u00e1c bi\u1ec7t so v\u1edbi c\u00e1c v\u1eadt li\u1ec7u t\u1eeb t\u00ednh 2D tr\u01b0\u1edbc \u0111\u00e2y. C\u01a1 ch\u1ebf \u0111\u1ed9c \u0111\u00e1o n\u00e0y l\u00e0 c\u00f3 th\u1ec3 l\u00e0 do c\u00e1c \u0111i\u1ec7n t\u1eed t\u1ef1 do trong oxit k\u1ebdm.<\/p>\n\n\n\n<p>Trong qu\u00e1 tr\u00ecnh th\u00ed nghi\u1ec7m, c\u00e1c nh\u00e0 khoa h\u1ecdc v\u00f4 c\u00f9ng ng\u1ea1c nhi\u00ean khi n\u1ed3ng \u0111\u1ed9 nguy\u00ean t\u1eed coban v\u01b0\u1ee3t qu\u00e1 15%, v\u1eadt li\u1ec7u t\u1eeb t\u00ednh 2D chuy\u1ec3n sang tr\u1ea1ng th\u00e1i l\u01b0\u1ee3ng t\u1eed k\u1ef3 l\u1ea1, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 tr\u1ea1ng th\u00e1i nam ch\u00e2m \u201cth\u1ea5t v\u1ecdng\u201d, k\u1ebft qu\u1ea3 h\u00ecnh th\u00e0nh c\u00e1c tr\u1ea1ng th\u00e1i t\u1eeb t\u00ednh \u0111\u1ed1i ngh\u1ecbch kh\u00e1c nhau trong h\u1ec7 th\u1ed1ng 2D.<\/p>\n\n\n\n<p>Kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u00e1c v\u1eadt li\u1ec7u 2D tr\u01b0\u1edbc \u0111\u00e2y, m\u1ea5t t\u1eeb \u200b\u200bt\u00ednh \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng ho\u1eb7c cao h\u01a1n, c\u00e1c nh\u00e0 khoa h\u1ecdc ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c, v\u1eadt li\u1ec7u nam ch\u00e2m m\u1edbi kh\u00f4ng ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng m\u00e0 c\u00f2n duy tr\u00ec \u1edf 100 \u0111\u1ed9 C (212 \u0111\u1ed9 F).<\/p>\n\n\n\n<p>                                                                                            ngu\u1ed3n: khoahocdoisong.vn<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nam ch\u00e2m 2D \u0111\u1ed9 d\u00e0y m\u1ed9t nguy\u00ean t\u1eed do TS Jie Yao thu\u1ed9c \u0110\u1ea1i h\u1ecdc California, Berkeley v\u00e0 Ph\u00f2ng th\u00ed nghi\u1ec7m Qu\u1ed1c gia Lawrence Berkeley c\u00f9ng c\u00e1c \u0111\u1ed3ng nghi\u1ec7p c\u00f3 th\u1ec3 th\u00fac \u0111\u1ea9y s\u1ef1 \u0111\u1ed9t ph\u00e1 \u0111\u1ed1i v\u1edbi nh\u1eefng b\u1ed9 nh\u1edb th\u1ebf h\u1ec7 ti\u1ebfp theo, m\u00e1y t\u00ednh, spintronics v\u00e0 v\u1eadt l\u00fd l\u01b0\u1ee3ng t\u1eed. Nh\u00f3m nghi\u00ean [&hellip;]<\/p>\n","protected":false},"author":23,"featured_media":29286,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-29285","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/29285","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/23"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=29285"}],"version-history":[{"count":1,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/29285\/revisions"}],"predecessor-version":[{"id":29287,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/29285\/revisions\/29287"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/29286"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=29285"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=29285"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=29285"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}