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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 pub-id-type="doi">10.29235/1561-2430-2021-57-1-119-126</article-id><article-id custom-type="elpub" pub-id-type="custom">vestifm-573</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>Исследование твердых растворов (In2S3)х·(AgIn5S8)1–х</article-title><trans-title-group xml:lang="en"><trans-title>Study of (In2S3)х·(AgIn5S8)1–х solid solutions</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>Боднарь</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bodnar</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Боднарь Иван Васильевич – доктор химических наук, профессор кафедры проектирования информационно-компьютерных систем</p><p>ул. П. Бровки, 6, 220013, г. Минск </p></bio><bio xml:lang="en"><p>Ivan V. Bodnar – Dr. Sc. (Chemistry), Professor of the Department of Design of Information and Computer Systems </p><p>6, P. Brovka  Str., 220013, Minsk</p></bio><email xlink:type="simple">chemzav@bsuir.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/0000-0001-8290-3884</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фещенко</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Feshshenko</surname><given-names>А. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Фещенко Артем Александрович – аспирант</p><p>ул. П. Бровки, 6, 220013, г. Минск </p></bio><bio xml:lang="en"><p>Artsiom A. Feshshenko – Postgraduate Student</p><p>6, P. Brovka Str., 220013, Minsk </p></bio><email xlink:type="simple">faa@bsuir.by</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>Хорошко</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Khoroshko</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хорошко Виталий Викторович – кандидат технических наук, заведующий кафедрой проектирования информационно-компьютерных систем</p><p>ул. П. Бровки, 6, 220013, г. Минск </p></bio><bio xml:lang="en"><p>Vitaly V. Khoroshko – Ph. D., Head of the Department of Design of Information and Computer Systems</p><p>6, P. Brovka Str., 220013, Minsk</p></bio><email xlink:type="simple">khoroshko@bsuir.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет информатики и радиоэлектроники</institution></aff><aff xml:lang="en"><institution>Belarusian State University of Informatics and Radioelectronics</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>01</day><month>04</month><year>2021</year></pub-date><volume>57</volume><issue>1</issue><fpage>119</fpage><lpage>126</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Боднарь И.В., Фещенко А.А., Хорошко В.В., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Боднарь И.В., Фещенко А.А., Хорошко В.В.</copyright-holder><copyright-holder xml:lang="en">Bodnar I.V., Feshshenko А.A., Khoroshko V.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://vestifm.belnauka.by/jour/article/view/573">https://vestifm.belnauka.by/jour/article/view/573</self-uri><abstract><p>Методом направленной  кристаллизации  выращены  монокристаллы соединений In2S3, AgIn5S8 и твердых растворов (In2S3)х·(AgIn5S8)1–х. Методом микрозондового рентгеноспектрального  анализа определен состав полученных монокристаллов. Установлено, что содержание компонентов в выращенных монокристаллах удовлетворительно согласуется с заданным составом в исходной шихте. Рентгеновским методом определена структура полученных материалов. Показано, что  как исходные соединения,  так и  твердые растворы на их основе кристаллизуются в кубической структуре шпинели. Методом наименьших квадратов рассчитаны параметры элементарной ячейки  соединений  In2S3, AgIn5S8 и твердых  растворов  на  их  основе,  которые  с составом  х изменяются линейно. Пикнометрическим методом определена плотность, по методу Кнупа – микротвердость соединений In2S3,AgIn5S8 и твердых растворов (In2S3)х·(AgIn5S8)1–х. Показано, что плотность, как и параметр элементарной ячейки, с составом х изменяется линейно, микротвердость – с максимумом для состава х = 0,4. С помощью  дифференциально-термического  анализа  (ДТА)  определены температуры фазовых  превращений и  построена диаграмма состояния  системы In2S3–AgIn5S8, которая характеризуется небольшим интервалом кристаллизации и относится III типу по классификации Розебома. Кривые ликвидуса и солидуса вогнуты к оси абсцисс и имеют общую точку.</p></abstract><trans-abstract xml:lang="en"><p>Herein, single crystals of compounds In2S3, AgIn5S8 and solid solutions (In2S3)х·(AgIn5S8)1–х were grown by directional crystallization. The composition of the obtained single crystals was determined by microprobe X-ray spectral analysis. It is found that the content of the components in the grown single crystals is in satisfactory agreement with the specified composition in the initial charge. The structure of the obtained materials was determined by the X-ray method. It is shown that both the initial compounds and the solid solutions based on them were crystallized in the cubic structure of the spinel. The unit cell parameters of the In2S3, AgIn5S8 compounds and the solid solutions based on them, which vary linearly with the composition x, were calculated by the least squares method. The density was determined by the pycnometric method, and the microhardness of the In2S3 and AgIn5S8 compounds and the (In2S3)х·(AgIn5S8)1–х solid solutions was determined by the Knoop method. It is shown that the density, like the unit cell parameter, changes linearly with the composition x, but the dependence of microhardness on the x parameter has a maximum for x = 0.4. Using differential thermal analysis (DTA), the temperatures of phase transformations were determined and the phase diagram of the In2S3–AgIn5S8 system was constructed, which is characterized by a small crystallization interval and belongs to type III according to the Rosebom classification. The curves of liquidus and solidus are concave to the abscissa axis and have a common point.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>двухтемпературный метод</kwd><kwd>метод Бриджмена</kwd><kwd>твердые растворы</kwd><kwd>монокристаллы</kwd><kwd>пикноме трическая плотность</kwd><kwd>микротвердость</kwd><kwd>температуры фазовых превращений</kwd><kwd>диаграмма</kwd></kwd-group><kwd-group xml:lang="en"><kwd>two-temperature method</kwd><kwd>Bridgman’s method</kwd><kwd>solid solutions</kwd><kwd>single crystals</kwd><kwd>pycnometric density</kwd><kwd>microhardness</kwd><kwd>phase transformation temperatures</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Полупроводниковые халькогениды и сплавы на их основе / Н. Х. Абрикосов [и др.]. – М., Наука, 1975. – 220 c.</mixed-citation><mixed-citation xml:lang="en">Abrikosov N. Kh., Bankina V. F., Poretskaya L. V., Skudnova E. 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