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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">vestifm</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-математических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-2430</issn><issn pub-type="epub">2524-2415</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">vestifm-85</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>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>ФАЗОВЫЕ ПРЕВРАЩЕНИЯ ПРИ КРИСТАЛЛИЗАЦИИ Sr2FeMoO6–δ ИЗ ПРОСТЫХ ОКСИДОВ</article-title><trans-title-group xml:lang="en"><trans-title>PHASE TRANSFORMATIONS DURING CRYSTALLIZATION OF Sr2FeMoO6–δ FROM SIMPLE OXIDES</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>Каланда</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kalanda</surname><given-names>M. A.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><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><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Панасевич</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Panasevich</surname><given-names>A. M.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кривченя</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kryuchenia</surname><given-names>D. A.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-практический центр НАН Беларуси по материаловедению, Минск</institution></aff><aff xml:lang="en"><institution>Scientific and Practical Materials Research Centre of the National Academy of Sciences of Belarus, Minsk</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>18</day><month>05</month><year>2016</year></pub-date><volume>0</volume><issue>2</issue><fpage>82</fpage><lpage>85</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Каланда Н.А., Ярмолич М.В., Панасевич А.М., Кривченя Д.А., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Каланда Н.А., Ярмолич М.В., Панасевич А.М., Кривченя Д.А.</copyright-holder><copyright-holder xml:lang="en">Kalanda M.A., Yarmolich M.V., Panasevich A.M., Kryuchenia D.A.</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://vestifm.belnauka.by/jour/article/view/85">https://vestifm.belnauka.by/jour/article/view/85</self-uri><abstract><p>На основании изучения последовательности фазовых превращений при кристаллизации Sr2FeMoO6–δ установлено, что синтез двойного перовскита в смеси простых оксидов протекает через ряд последовательно-параллельных стадий. На начальном этапе взаимодействия образующийся ферромолибдат стронция обогащен железом и его состав в ходе реакции изменяется в сторону увеличения содержания молибдена. Оксид молибдена в тройной смеси состава 2SrCO3+ + MoO3 + 0,5Fe2O3 вступает в реакцию несколько быстрее с карбонатом стронция, чем оксид железа. Показано, что в процессе кристаллизации двойного перовскита ферромолибдата стронция в интервале температур Т = (300–1420)К имеет место следующая последовательность фазовых превращений: {Fe2O3, MoO3, SrCO3} (300 К) → {SrMoO4, Fe2O3, SrCO3} (770 К) → {SrMoO4, SrFeO3–х (следы), Sr2FeMoO6–δ (следы)} (970 К) → {SrMoO4, Sr2FeMoO6–δ } (1170 К) → { Sr2FeMoO6–δ } (1420 К).</p></abstract><trans-abstract xml:lang="en"><p>The sequence of phase transformations during Sr2FeMoO6–δ crystallization by the solid phase method was studied for powders synthesized from the stoichiometric mixture of SrCO3 Fe2O3, MoO3 oxides. It is found that the synthesis of a strontium ferromolybdate solid solution proceeds through a series of parallel chemical reactions. It is revealed that at the beginning stage of interaction, the initially formed Sr2FeMoO6–δ powder is enriched with iron. During the annealing process, the composition of strontium ferromolybdate changes and the molybdenum content increases upon further heating. It is shown that in the process of crystallization of double perovskite in the temperature range T = (300–1420) K, there is the following sequence of phase transformations Fe2O3, MoO3, SrCO3} (300 К) → {SrMoO4, Fe2O3, SrCO3} (770 К) → {SrMoO4, SrFeO3–х (traces), Sr2FeMoO6–δ (traces)} (970 K) → {SrMoO4, Sr2FeMoO6–δ } (1170 К) → { Sr2FeMoO6–δ } (1420 К)..</p></trans-abstract></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. M., Ibarra M. R. // J. Phys.: Condens. Matter. 2007. 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