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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Inorganic Materials</journal-id><journal-title-group><journal-title xml:lang="en">Inorganic Materials</journal-title><trans-title-group xml:lang="ru"><trans-title>Неорганические материалы</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0002-337X</issn><issn publication-format="electronic">3034-5588</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">140164</article-id><article-id pub-id-type="doi">10.31857/S0002337X23050135</article-id><article-id pub-id-type="edn">KHBIAO</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Unknown</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Thermal Conductivity of Single Crystals of CaF<sub>2</sub>–SrF<sub>2</sub>–BaF<sub>2</sub>–YbF<sub>3</sub> Solid Solutions</article-title><trans-title-group xml:lang="ru"><trans-title>Теплопроводность монокристаллов твердых растворов системы CaF<sub>2</sub>–SrF<sub>2</sub>–BaF<sub>2</sub>–YbF<sub>3</sub></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Popov</surname><given-names>P. A.</given-names></name><name xml:lang="ru"><surname>Попов</surname><given-names>П. А.</given-names></name></name-alternatives><email>neorganmat@igic.ras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Krugovykh</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Круговых</surname><given-names>А. А.</given-names></name></name-alternatives><email>neorganmat@igic.ras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Konyushkin</surname><given-names>V. A.</given-names></name><name xml:lang="ru"><surname>Конюшкин</surname><given-names>В. А.</given-names></name></name-alternatives><email>ppfedorov@yandex.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Nakladov</surname><given-names>A. N.</given-names></name><name xml:lang="ru"><surname>Накладов</surname><given-names>А. Н.</given-names></name></name-alternatives><email>ppfedorov@yandex.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ushakov</surname><given-names>S. N.</given-names></name><name xml:lang="ru"><surname>Ушаков</surname><given-names>С. Н.</given-names></name></name-alternatives><email>rusjinorgchem@yandex.ru</email><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Uslamina</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Усламина</surname><given-names>М. А.</given-names></name></name-alternatives><email>rusjinorgchem@yandex.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Nishchev</surname><given-names>K. N.</given-names></name><name xml:lang="ru"><surname>Нищев</surname><given-names>К. Н.</given-names></name></name-alternatives><email>rusjinorgchem@yandex.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kuznetsov</surname><given-names>S. V.</given-names></name><name xml:lang="ru"><surname>Кузнецов</surname><given-names>С. В.</given-names></name></name-alternatives><email>ppfedorov@yandex.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Fedorov</surname><given-names>P. P.</given-names></name><name xml:lang="ru"><surname>Федоров</surname><given-names>П. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>buchinskayii@gmail.com</email><xref ref-type="aff" rid="aff5"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Petrovskii State University</institution></aff><aff><institution xml:lang="ru">Брянский государственный университет им. И.Г. Петровского</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Prokhorov General Physics Institute of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт общей физики им. А.М. Прохорова Российской академии наук</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Prokhorov General Physics Institute, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт общей физики им. А.М. Прохорова РАН</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Ogarev Mordovian State University</institution></aff><aff><institution xml:lang="ru">Мордовский государственный университет им. Н.П. Огарева</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">A.M. Prokhorov General Physics Institute of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Федеральный исследовательский центр “Институт общей физики им. А.М. Прохорова РАН”</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-05-01" publication-format="electronic"><day>01</day><month>05</month><year>2023</year></pub-date><volume>59</volume><issue>5</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>529</fpage><lpage>533</lpage><history><date date-type="received" iso-8601-date="2023-10-17"><day>17</day><month>10</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, П.А. Попов, А.А. Круговых, В.А. Конюшкин, А.Н. Накладов, С.Н. Ушаков, М.А. Усламина, К.Н. Нищев, С.В. Кузнецов, П.П. Федоров</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, П.А. Попов, А.А. Круговых, В.А. Конюшкин, А.Н. Накладов, С.Н. Ушаков, М.А. Усламина, К.Н. Нищев, С.В. Кузнецов, П.П. Федоров</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">П.А. Попов, А.А. Круговых, В.А. Конюшкин, А.Н. Накладов, С.Н. Ушаков, М.А. Усламина, К.Н. Нищев, С.В. Кузнецов, П.П. Федоров</copyright-holder><copyright-holder xml:lang="ru">П.А. Попов, А.А. Круговых, В.А. Конюшкин, А.Н. Накладов, С.Н. Ушаков, М.А. Усламина, К.Н. Нищев, С.В. Кузнецов, П.П. Федоров</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://journals.rcsi.science/0002-337X/article/view/140164">https://journals.rcsi.science/0002-337X/article/view/140164</self-uri><abstract xml:lang="en"><p>Single crystals of CaxSryBazF2 (x = 0.31–0.4045, y = 0.31–0.50, z = 0.10–0.38) and CaxSryBazYb0.005F2.005 (x = 0.295–0.495, y = 0.30–0.50, z = 0.10–0.40) fluorite solid solutions have been grown by the Bridgman technique, and their thermal conductivity has been measured in the range 50–300 K by an absolute steady-state axial heat flow technique. The room-temperature thermal conductivity of all the crystals studied is below 2.5 W/(m K). As the percentage of the heavy components of the solid solutions increases, their thermal conductivity decreases. In addition, this factor reduces the negative effect of the heterovalent dopant YbF3 on the thermal conductivity of the crystals.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45181324159904">Методом Бриджмена выращены монокристаллические образцы твердых растворов Ca<sub><italic>x</italic></sub>Sr<sub><italic>y</italic></sub>Ba<sub><italic>z</italic></sub>F<sub>2</sub> (<italic>x</italic> = 0.31–0.4045, <italic>y</italic> = 0.31–0.50, <italic>z</italic> = 0.10–0.38) и Ca<sub><italic>x</italic></sub>Sr<sub><italic>y</italic></sub>Ba<sub><italic>z</italic></sub>Yb<sub>0.005</sub>F<sub>2.005</sub> (<italic>x</italic> = 0.295–0.495, <italic>y</italic> = 0.30–0.50, <italic>z</italic> = 0.10–0.40) с флюоритовой структурой. Абсолютным стационарным методом продольного теплового потока в интервале 50–300 K исследована их теплопроводность. При комнатной температуре значения коэффициента теплопроводности всех исследованных образцов ниже 2.5 Вт/(м К). Теплопроводность убывает с увеличением содержания тяжелых компонентов в данных твердых растворах. Этот же фактор снижает негативное влияние на теплопроводность добавки гетеровалентной примеси YbF<sub>3</sub>.</p></trans-abstract><kwd-group xml:lang="en"><kwd>solid solution</kwd><kwd>calcium fluoride</kwd><kwd>strontium fluoride</kwd><kwd>barium fluoride</kwd><kwd>ytterbium fluoride</kwd><kwd>single crystal growth</kwd><kwd>thermal conductivity</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>твердый раствор</kwd><kwd>фторид кальция</kwd><kwd>фторид стронция</kwd><kwd>фторид бария</kwd><kwd>фторид иттербия</kwd><kwd>выращивание монокристаллов</kwd><kwd>теплопроводность</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Crystals with the Fluorite Structure. 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