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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">10.17073/1609-3577-2019-3-149-157</article-id><article-id custom-type="elpub" pub-id-type="custom">mateltech-338</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>СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ARTICLES</subject></subj-group></article-categories><title-group><article-title>Фазовые превращения при кристаллизации Sr2CrMoO6–δ</article-title><trans-title-group xml:lang="en"><trans-title>Phase transformation during Sr2CrMoO6–δ synthesis</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7679-4968</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каланда</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kalanda</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">kalanda@physics.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5651-1000</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гурский</surname><given-names>А. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Gurskii</surname><given-names>A. L.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">gurskii@bsuir.by</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8005-2171</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ярмолич</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Yarmolich</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">jarmolich@physics.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6765-8072</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бобриков</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bobrikov</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">bobrikov@nf.jinr.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8551-5246</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иваньшина</surname><given-names>О. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanshina</surname><given-names>O. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">oyuivanshina@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3213-7880</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сумников</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sumnikov</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">sumnikovsv@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петров</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Petrov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">petrov@physics.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5721-2280</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Maia</surname><given-names>F.</given-names></name><name name-style="western" xml:lang="en"><surname>Maia</surname><given-names>F.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">frederico.maia@smallmatek.pt</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Желудкевич</surname><given-names>А. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhaludkevich</surname><given-names>A. L.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">zheludkevich27@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>Демьянов</surname><given-names>С. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Demyanov</surname><given-names>S. E.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">demyanov@ifttp.bas-net.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Научно-практический центр Национальной академии наук Беларуси &#13;
по материаловедению НАН Беларуси, &#13;
ул. П. Бровки, д. 19, Минск, 220072, Беларусь<country>Беларусь</country></aff><aff xml:lang="en">Scientific-Practical Materials Research Centre of the NAS of Belarus, &#13;
19 P. Brovka Str., Minsk 220072, Belarus<country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Белорусский государственный университет информатики и радиоэлектроники, &#13;
ул. П. Бровки, д. 6, Минск, 220013, Беларусь<country>Беларусь</country></aff><aff xml:lang="en">Belarusian State University of Informatics and Radioelectronics, &#13;
6 P. Brovka Str., Minsk 220013, Belarus<country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">Лаборатория нейтронной физики им. И. М. Франка, &#13;
Объединенный институт ядерных исследований, &#13;
ул. Жолио-Кюри, д. 6, Дубна, 141980, Россия<country>Россия</country></aff><aff xml:lang="en">I.M. Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, &#13;
6 Joliot-Curie Str., Moscow Region, Dubna 141980, Russia<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru">Smallmatek - Small Materials and Technologies, Lda., &#13;
Rua dos Canhas, Aveiro 3810-075, Portugal<country>Португалия</country></aff><aff xml:lang="en">Smallmatek - Small Materials and Technologies, Lda., &#13;
Rua dos Canhas, Aveiro 3810-075, Portugal<country>Portugal</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>18</day><month>01</month><year>2020</year></pub-date><volume>22</volume><issue>3</issue><fpage>149</fpage><lpage>157</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Каланда Н.А., Гурский А.Л., Ярмолич М.В., Бобриков И.А., Иваньшина О.Ю., Сумников С.В., Петров А.В., Maia F., Желудкевич А.Л., Демьянов С.Е., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Каланда Н.А., Гурский А.Л., Ярмолич М.В., Бобриков И.А., Иваньшина О.Ю., Сумников С.В., Петров А.В., Maia F., Желудкевич А.Л., Демьянов С.Е.</copyright-holder><copyright-holder xml:lang="en">Kalanda N.A., Gurskii A.L., Yarmolich M.V., Bobrikov I.A., Ivanshina O.Y., Sumnikov S.V., Petrov A.V., Maia F., Zhaludkevich A.L., Demyanov S.E.</copyright-holder><license 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/338">https://met.misis.ru/jour/article/view/338</self-uri><abstract><p>Исследована последовательность фазовых превращений в процессе кристаллизации Sr2CrMoO6-δ из стехиометрической смеси простых оксидов SrCO3 + 0,5Cr2O3 + MoO. Установлено, что фазообразование хромомолибдата стронция протекает через ряд последовательно-параллельных стадий. Согласно данным дифференциально-термического и термогравиметрического анализов, обнаружено, что в температурном диапазоне 300—1300 К наблюдается пять ярко выраженных эндотермических эффектов. При изучении последовательности фазовых превращений в процессе синтеза двойного перовскита обнаружено, что основными сопутствующими соединениями являются SrCrO3, SrMoO4 и Sr2CrO4. При этом замечено, что с ростом температуры отжига от 300 до 1270 К в исходной смеси первоначально и практически одновременно появляются сложные соединения SrCrO4, SrCrO3 (350—550 К), а затем и SrMoO4, Sr2CrO4 (600—750 К). Показано, что с последующим увеличением температуры в интервале температур 940—1100 К концентрация фаз SrMoO4, Sr2CrO4 и SrCrO3 резко падает с появлением и ростом двойного перовскита Sr2CrMoO6-δ. При этом в интервале температур до 1120—1190 К основные рентгеновские рефлексы фазы Sr2CrO4 уменьшаются незначительно, тогда как интенсивность рентгеновских рефлексов фаз SrCrO3 и SrMoO4 снижается существенно больше и их содержание в образце при температуре 1170 К составляет не более 7,9 %. Анализ амплитудных значений производной степени превращения фаз SrCrO3, SrMoO4 и Sr2CrO4, при которых скорости их кристаллизации максимальны, показал, что для Sr2CrO4 величина |(dα/dt)|mах соответствует наибольшей температуре T = 1045 К. Это указывает на наличие кинетических трудностей при образовании фазы Sr2CrO4, которая в дальнейшем не исчезает, а при ее появлении наблюдается замедление роста двойного перовскита. На основании результатов, полученных при изучении динамики фазовых превращений для формирования однофазного Sr2CrMoO6-δ со сверхструктурным упорядочением Cr/Mo и улучшенными магнитными характеристиками, были применены прекурсоры SrCrO3 и SrMoO4 с использованием комбинированных режимов нагрева.</p></abstract><trans-abstract xml:lang="en"><p>The sequence of phase transformations in the process of crystallization of the Sr2CrMoO6 by the solid-phase technique from a stoichiometric mixture of simple oxides SrCO3 + 0.5Cr2O3 + MoO, has been investigated. It was determined that the synthesis of the strontium chrome-molybdate proceeds through a series of sequential-parallel stages. By means of the differential thermal analysis and thermogravimetric analysis data, it has been established that five clearly expressed endothermal effects were observed in the temperature range 300—1300 K. It was found that during the studies of the phase transformations sequence in the process of the double perovskite synthesis, SrCrO3, SrMoO4 and Sr2CrO4 are the main concomitant compounds. Herewith, it has been observed that with the annealing temperature increase from 300 to 1270 K, the complex compounds SrCrO4, SrCrO3 (350—550 K) and SrMoO4, Sr2CrO4 (600—750 K) are emerging initially and practically simultaneously. It has been revealed with a subsequent temperature increase that in the temperature range 940—1100 K, the SrMoO4, Sr2CrO4 and SrCrO3 phase concentration dramatically drops with the emerging and growth of the Sr2CrMoO6-δ double perovskite. With that in the range up to 1120—1190 K, the main XRD reflexes intensity for the SrCrO3 and SrMoO4 lowers substantially, and their content in the samples at 1170 К is no more than 7,9 %. During a consideration of the derivative of the SrCrO3, SrMoO4 and Sr2CrO4 phase transformation degree (|(dα/dt)|mах), at which their crystallization rates are maximal, it has been determined that |(dα/dt)|mах for the Sr2CrO4 corresponds to the maximal temperature 1045 K, which indicates the presence of considerable kinetic difficulties at the formation of the Sr2CrO4 phase. Thereafter this phase does not disappear and at its appearance the slowing down of the double perovskite growth takes place. On the base of investigations of the phase transformations dynamics for the obtaining of the single-phase Sr2CrMoO6-δ compound with the superstructural ordering of the Cr/Mo cations and improved magnetic characteristics, the SrCrO3 and SrMoO4 precursors were used with combined heating modes.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>двойной перовскит</kwd><kwd>дифференциально-термический анализ</kwd><kwd>термогравиметрический анализ</kwd><kwd>последовательность фазовых превращений</kwd><kwd>скорость кристаллизации</kwd></kwd-group><kwd-group xml:lang="en"><kwd>double perovskite</kwd><kwd>differential thermal analysis</kwd><kwd>thermogravimetric analysis</kwd><kwd>sequence of phase transformations</kwd><kwd>crystallization rate</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Авторы работы признательны за поддержку данного исследования в рамках проекта программы ЕС «Горизонт-2020» (H2020-MSCA-RISE-2018-823942 - FUNCOAT) и проекта Белорусского республиканского фонда фундаментальных исследований № Ф18Д-009.</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>The support of the work in frames of the European project H2020-MSCA-RISE-2018-823942 - FUNCOAT and the project of the Belarusian republican foundation for fundamental research No. F18D-009 are gratefully acknowledged.</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">Serrate D., De Teresa J. 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