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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="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">mateltech</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Материалы электронной техники</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1609-3577</issn><issn pub-type="epub">2413-6387</issn><publisher><publisher-name>MISIS</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/1609-3577-2021-4-260-266</article-id><article-id custom-type="elpub" pub-id-type="custom">mateltech-478</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="ru"><subject>Математическое моделирование в материаловедении электронных компонентов</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATHEMATICAL MODELING IN MATERIALS SCIENCE OF ELECTRONIC COMPONENTS</subject></subj-group></article-categories><title-group><article-title>Исследование сегрегации примеси никеля на открытых поверхностях структуры LSNT перовскита методом первопринципной молекулярной динамики</article-title><trans-title-group xml:lang="en"><trans-title>The study of nickel impurity segregation on LSNT perovskite open surfaces by means of ab initio molecular dynamics</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>Чистякова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Chistyakova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ленинские горы, д. 1, стр. 2, Москва 119991</p><p>Чистякова Анна Александровна – студент, Физический факультет</p></bio><bio xml:lang="en"><p>1-2 Leninskie Gory, Moscow, 119991</p><p>Anna A. Chistyakova — Student, Faculty of Physics,</p></bio><email xlink:type="simple">anutochkachi@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бажанов</surname><given-names>Д. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Bazhanov</surname><given-names>D. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ленинские горы, д. 1, стр. 2, Москва 119991;</p><p>ул. Вавилова, д. 44, корп. 2, Москва, 119333;</p><p>Волоколамское шоссе, д. 4, Москва, 125993</p><p>Бажанов Дмитрий Игоревич — кандидат физ.-мат. наук, старший преподаватель кафедры физики твердого тела, Физический факультет</p></bio><bio xml:lang="en"><p>1-2 Leninskie Gory, Moscow, 119991;</p><p>44-2 Vavilova Str., Moscow 119333;</p><p>4 Volokolamskoe Highway, Moscow 125993</p><p>Dmitriy I. Bazhanov — Cand. Sci. (Phys.-Math.), Senior Lecturer, Department of Solid State Physics, Faculty of Physics</p></bio><email xlink:type="simple">dima@kintechlab.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный университет имени М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Московский государственный университет имени М.В. Ломоносова;&#13;
Федеральный исследовательский центр «Информатика и управление» Российской академии наук;&#13;
Московский авиационный институт (национальный исследовательский университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University;&#13;
Federal Research Center “Computer Science and Control” of the Russian Academy of Sciences;&#13;
Moscow Aviation Institute (National Research University)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>31</day><month>01</month><year>2022</year></pub-date><volume>24</volume><issue>4</issue><fpage>260</fpage><lpage>266</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Чистякова А.А., Бажанов Д.И., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Чистякова А.А., Бажанов Д.И.</copyright-holder><copyright-holder xml:lang="en">Chistyakova A.A., Bazhanov D.I.</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://met.misis.ru/jour/article/view/478">https://met.misis.ru/jour/article/view/478</self-uri><abstract><p>В работе методом первопринципной молекулярной динамики в рамках теории функционала плотности исследуется сегрегация примеси Ni в направлении открытых поверхностей легированного перовскита титаната стронция на примере модельной ячейки со стехиометрией La0,5Sr0,5TiO3x. Представленные исследования основываются на недавних экспериментальных наблюдениях по сегрегации примесных атомов Ni и их стремлении образовывать кластеры вблизи границ дефектов структуры перовскита La0,2Sr0,7Ni0,1Ti0,9O3-δ (LSNT). Результаты первопринципных расчетов энергии сегрегации показали, что Ni действительно активно сегрегирует в направлении открытых поверхностей. Было обнаружено, что в процессе сегрегации атомы никеля выходят из кристаллического объема к поверхности перовскита и поднимаются над ее верхнем слое. Таким образом результаты расчетов подтверждают данные экспериментальных наблюдений по сегрегации и формированию кластеров никеля на открытых поверхностях LSNT. </p></abstract><trans-abstract xml:lang="en"><p>In this paper, the segregation of the Ni impurity on open surfaces of the doped strontium titanate perovskite is investigated by means of ab initio molecular dynamics method based on the density functional theory and applied to a model periodic cell with stoichiometry La0.5Sr0.5TiO3 (LST).The performed studies are based on recent experimental observations on the segregation of Ni impurity atoms and their tendency to form clusters at the boundaries of defect structure of La0.2Sr0.7Ni0.1Ti0.9O3-δ (LSNT) perovskite. The results of the first-principles calculations of segregation energy showed that Ni does actively segregate toward the open surfaces. It was found that during segregation, nickel atoms leave the crystal volume to the perovskite surface and rise above its upper layer. Thus, the obtained results confirm the experimental data on the segregation and formation of nickel clusters on open LSNT surfaces.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>перовскит</kwd><kwd>сегрегация</kwd><kwd>кластер</kwd><kwd>катион</kwd><kwd>LST и LSNT материалы</kwd><kwd>подрешётка</kwd><kwd>теория функционала плотности</kwd></kwd-group><kwd-group xml:lang="en"><kwd>perovskite</kwd><kwd>segregation</kwd><kwd>cluster</kwd><kwd>cation</kwd><kwd>LST and LSNT materials</kwd><kwd>sublattice</kwd><kwd>density functional theory</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы статьи благодарят за финансовую поддержку Российский фонд фундаментальных исследований (грант № 19-29-03051мк). Первопринципные расчеты проводились с использованием возможностей центра коллективного пользования вычислительными ресурсами МСЦ РАН.</funding-statement><funding-statement xml:lang="en">The authors are grateful for financial support from the Russian Foundation for Basic Research (grant No. 19-29-03051mk). Ab initio calculations were carried out using the capabilities of the center for the collective use of computing resources of the Interdepartmental Supercomputer Center of the Russian Academy of Sciences.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Su D., Xu Q.Y., Zhu J.S., Wang Y.N. Comment on “Model of phase transition induced antiphase boundaries in perovskite and layered perovskite oxides” [Journal of Applied Physics. 2002; 92: 5425]. 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