{"id":505,"date":"2020-06-29T10:12:20","date_gmt":"2020-06-29T03:12:20","guid":{"rendered":"https:\/\/materials-lab.hcmus.edu.vn\/?p=505"},"modified":"2023-04-28T23:49:47","modified_gmt":"2023-04-28T16:49:47","slug":"congratulation-for-the-2nd-publication-of-laboratory-of-advanced-materials-in-2020","status":"publish","type":"post","link":"https:\/\/materials-lab.hcmus.edu.vn\/?p=505","title":{"rendered":"Congratulation for the 2nd publication of Laboratory of Advanced Materials in 2020"},"content":{"rendered":"\n<p>Title: <strong>Effects of multi-scale defects on the thermoelectric properties of delafossite CuCr<sub>1-x<\/sub>Mg<sub>x<\/sub>O<sub>2<\/sub> materials<\/strong><\/p>\n<p><strong>Authours:\u00a0Dung Van Hoang<\/strong>, <strong>Anh Tuan Thanh Pham<\/strong>, Hanh Kieu Thi Ta, <strong>Truong Huu Nguyen<\/strong>, Ngoc Kim Pham, Lai Thi Hoa, <strong>Vinh Cao Tran<\/strong>, Ohtaki Michitaka, Quang Minh Nhat Tran, Jong-Ho Park, Jae-Ki Lee, Su-Dong Park, Tae-Seong Ju, Hong jun Park, Sung kyun Park, Thang Bach Phan<\/p>\n<p>Journal: <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S092583882032483X?via%3Dihub\" target=\"_blank\" rel=\"noopener noreferrer\">Journal of Alloys and Compounds<\/a>; Available online 25 June 2020, 156119<\/p>\n<div id=\"abs0010\" class=\"abstract author\" lang=\"en\">\n<h2 class=\"section-title u-h3 u-margin-l-top u-margin-xs-bottom\">Abstract<\/h2>\n<div id=\"abssec0010\">\n<p>The thermoelectric performance of CuCr<sub>1-x<\/sub>Mg<sub>x<\/sub>O<sub>2<\/sub> materials in terms of multi-scale defects induced at various Mg dopant concentrations (x\u202f=\u202f0\u20130.3) was thoroughly studied in this paper. At 748\u202fK and for x\u202f=\u202f0.05, 0.15, and 0.30, we report the following power factors and thermal conductivities: 175, 213, and 2.3\u202f\u03bcW\/m K<sup>2<\/sup> and 7.85, 5.60, and 3.82\u202fW\/m K, respectively. In the low doping regime (x\u202f&lt;\u202f0.15), the thermoelectric performance is mainly dependent on hole carriers originated from point defects via Mg substitution on Cr sites, whereas the thermoelectric properties reduce significantly for x\u202f\u2265\u202f0.15 due to nanoscale secondary phases (MgCr<sub>2<\/sub>O<sub>4<\/sub>, Cu<sub>2<\/sub>O and CuO) and mesoscale grain boundaries. At 748\u202fK, our CuCr<sub>0.85<\/sub>Mg<sub>0.15<\/sub>O<sub>2<\/sub> samples exhibit a high figure of merit ZT\u202f=\u202f0.028, which is better than those of other CuCr<sub>1-x<\/sub>Mg<sub>x<\/sub>O<sub>2<\/sub> and related delafossite materials. The correlations between the structural and thermoelectric properties of CuCr<sub>1-x<\/sub>Mg<sub>x<\/sub>O<sub>2<\/sub> materials are also discussed in detail.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Title: Effects of multi-scale defects on the thermoelectric properties of delafossite CuCr1-xMgxO2 materials Authours:\u00a0Dung Van Hoang,<\/p>\n","protected":false},"author":1,"featured_media":841,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"_links":{"self":[{"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=\/wp\/v2\/posts\/505"}],"collection":[{"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=505"}],"version-history":[{"count":3,"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=\/wp\/v2\/posts\/505\/revisions"}],"predecessor-version":[{"id":963,"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=\/wp\/v2\/posts\/505\/revisions\/963"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=\/wp\/v2\/media\/841"}],"wp:attachment":[{"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=505"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=505"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=505"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}