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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">najo</journal-id><journal-title-group><journal-title xml:lang="en">Nanosystems: Physics, Chemistry, Mathematics</journal-title><trans-title-group xml:lang="ru"><trans-title>Наносистемы: физика, химия, математика</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-8054</issn><issn pub-type="epub">2305-7971</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2220-8054-2024-15-5-621-631</article-id><article-id custom-type="elpub" pub-id-type="custom">najo-112</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКА</subject></subj-group></article-categories><title-group><article-title>Magnesium based tin-silicon alloys under pressure: first-principles evolution search results</article-title><trans-title-group xml:lang="ru"><trans-title>Оловянно-кремниевые сплавы на основе магния под давлением: результаты эволюционного поиска из первых принципов</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Луняков</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Luniakov</surname><given-names>Yuri V.</given-names></name></name-alternatives><bio xml:lang="en"><p>Yuri V. Luniakov</p><p>Radio Str. 5, 690041, Vladivostok</p></bio><email xlink:type="simple">luniakov@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>Institute of Automation and Control Processes of the Far Eastern Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>03</day><month>06</month><year>2025</year></pub-date><volume>15</volume><issue>5</issue><fpage>621</fpage><lpage>631</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Luniakov Y.V., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Луняков Ю.В.</copyright-holder><copyright-holder xml:lang="en">Luniakov Y.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://nanojournal.ifmo.ru/jour/article/view/112">https://nanojournal.ifmo.ru/jour/article/view/112</self-uri><abstract><p>The search of minimal enthalpy structures of ternary magnesium alloys of different stoichiometry MgxSiySnz under pressure P ≤ 6 GPa has been performed using the software suite USPEX implementing the evolution algorithm combined with the density functional theory (DFT) approach. The evolutionary search has yielded new possible ternary compounds of the stoichiometries Mg12Si3Sn, Mg4SiSn and Mg6Si3Sn, which have negative enthalpy of formation at pressures in the range of 0 to 10 GPa and which are not substitution solutions. These compounds have metallic properties and formation energies comparable to those of binary silicides MgxSiy.</p></abstract><trans-abstract xml:lang="ru"><p>C помощью пакета программ USPEX, реализующих эволюционные алгоритмы на базе теории функционала плотности (ТФП), был проведен поиск оптимальных структур смешанного станнидосилицида магния разной стехиометрии MgxSiySnz под давлением P ≤ 6 GPa. В результате эволюционного поиска были обнаружены новые структуры составов Mg12Si3Sn, Mg4SiSn and Mg6Si3Sn, которые имеют отрицательную энтальпию образования в диапазоне давлений 0 &lt; P ≤ 10 GPa и не являются твердыми растворами. Эти структуры имеют металлические свойства и характеризуются энергией формирования, сравнимой с энергией формирования бинарных силицидов MgxSiy.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Mg2SixSn1-x</kwd><kwd>кристаллическая структура</kwd><kwd>фазовые переходы</kwd><kwd>гидростатическое давление</kwd><kwd>эволюционный поиск</kwd><kwd>теория функционала плотности</kwd></kwd-group><kwd-group xml:lang="en"><kwd>MgxSiySnz</kwd><kwd>crystal structure</kwd><kwd>phase transitions</kwd><kwd>hydrostatic pressure</kwd><kwd>evolutional search</kwd><kwd>Density Functional Theory</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The results were obtained using the equipment of Shared Resource Center “Far Eastern Computing Resource” IACP FEB RAS (https://www.cc.dvo.ru). 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