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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">10.17073/1609-3577-2021-1-34-39</article-id><article-id custom-type="elpub" pub-id-type="custom">mateltech-435</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>Материаловедение и технология. Диэлектрики</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATERIALS SCIENCE AND TECHNOLOGY. DIELECTRICS</subject></subj-group></article-categories><title-group><article-title>Особенности высокотемпературной монодоменизации конгруэнтных сегнетоэлектрических кристаллов твердого раствора LiNb0,5Ta0,5O3</article-title><trans-title-group xml:lang="en"><trans-title>Properties of high-temperature poling ferroelectric crystals congruent solid solution LiNb0.5Ta0.5O3</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>Мололкин</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mololkin</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул. Академика Осипьяна, д. 6, Черноголовка, Московская область, 142432;ул. Буженинова, д. 16, Москва, 105023</p><p>Мололкин Анатолий Анатольевич — заместитель начальника производства AO «Фомос-Материалы»</p></bio><bio xml:lang="en"><p>16 Buzheninova Str., Moscow 107023</p><p>6 Academician Ossipyan Str., Chernogolovka, Moscow Region, 142432</p><p>Anatolii A. Mololkin: Deputy Head of Production JSC Fomos-Materials</p></bio><email xlink:type="simple">anatoli.mololkin.sooth@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9955-5222</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рощупкин</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Roshchupkin</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул. Академика Осипьяна, д. 6, Черноголовка, Московская область, 142432</p><p>Рощупкин Дмитрий Валентинович — доктор физ.-мат. наук, директор ИПТМ РАН</p></bio><bio xml:lang="en"><p>6 Academician Ossipyan Str., Chernogolovka, Moscow Region, 142432</p><p>Dmitry V. Roshchupkin: Dr. Sci. (Phys.-Math.), Director of IPTM RAS</p></bio><email xlink:type="simple">rochtch@iptm.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5038-3554</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Емелин</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Emelin</surname><given-names>E. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул. Академика Осипьяна, д. 6, Черноголовка, Московская область, 142432</p><p>Емелин Евгений Валерьевич — канд. физ.-мат. наук, научный сотрудник</p></bio><bio xml:lang="en"><p>6 Academician Ossipyan Str., Chernogolovka, Moscow Region, 142432</p><p>Eugenii V. Emelin: Researcher</p></bio><email xlink:type="simple">Emelin@iptm.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фахртдинов</surname><given-names>Р. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Fahrtdinov</surname><given-names>R. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул. Академика Осипьяна, д. 6, Черноголовка, Московская область, 142432</p><p>Фахртдинов Рашид Рашидович — канд. физ.-мат. наук, научный сотрудник</p></bio><bio xml:lang="en"><p>6 Academician Ossipyan Str., Chernogolovka, Moscow Region, 142432</p><p>Rashid R. Fahrtdinov: Researcher </p></bio><email xlink:type="simple">fakhrtd@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт проблем технологии микроэлектроники и особочистых материалов Российской академии наук;&#13;
AO «Фомос-Материалы»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Microelectronics Technology and High-Purity Materials of the Russian Academy of Sciences;&#13;
JSC Fomos-Materials</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт проблем технологии микроэлектроники и особочистых материалов Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Microelectronics Technology and High-Purity Materials of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>21</day><month>04</month><year>2021</year></pub-date><volume>24</volume><issue>1</issue><fpage>34</fpage><lpage>39</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мололкин А.А., Рощупкин Д.В., Емелин Е.В., Фахртдинов Р.Р., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Мололкин А.А., Рощупкин Д.В., Емелин Е.В., Фахртдинов Р.Р.</copyright-holder><copyright-holder xml:lang="en">Mololkin A.A., Roshchupkin D.V., Emelin E.E., Fahrtdinov R.R.</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/435">https://met.misis.ru/jour/article/view/435</self-uri><abstract><p>Ниобат и танталат лития относятся к важнейшим и наиболее широко применяемым материалам в акустооптике и акустоэлектронике. Эти материалы обладают большими значениями пьезоэлектрических констант, что позволяет использовать их в качестве актюаторов. Однако их использование ограничено термической неустойчивостью кристалла ниобата лития и низкой температурой Кюри TC кристалла танталата лития. Преодолеть эти недостатки, характерные для отдельных соединений, можно путем получения кристаллов LiNb1-xTaxO3. Методом Чохральского выращены кристаллы LiNb0,5Ta0,5O3 хорошего качества. Проведены сравнительные исследования особенностей высокотемпературной монодоменизации кристаллов LiNb0,5Ta0,5O3. Продемонстрированы основные отличия в технологических режимах при монодоменизации конгруэнтных кристаллов LiNb0,5Ta0,5O3 от конгруэнтных кристаллов LiNbO3. Представлены параметры высокотемпературной электродиффузионной обработки кристаллов LiNb0,5Ta0,5O3, позволяющие получать монодоменные кристаллы для дальнейшего изучения их физических свойств.</p></abstract><trans-abstract xml:lang="en"><p>Lithium niobate and lithium tantalate are among the most important and most widely used materials in acousto-optics and acoustoelectronics. These materials have high values of piezoelectric constants, which makes it possible to use these materials as actuators; however, their use is limited by the thermal instability of a lithium niobate crystal and the low Curie temperature (TC) of a lithium tantalate crystal. LiNb(1-x)TaxO3 crystals have to overcome the aforementioned limitations of individual compounds.</p><p>Crystals LiNb0.5Ta0.5O3 were grown by the Czochralski method, of good quality. Comparative studies of the features of high-temperature single domainization of LiNb0.5Ta0.5O3 crystals have been carried out. The main differences in the technological regimes for single-domainization of congruent LiNb0.5Ta0.5O3 crystals from congruent LiNbO3 crystals are demonstrated. The parameters of high-temperature electrodiffusion processing LiNb0.5Ta0.5O3 crystals are presented, which make it possible to obtain single-domain crystals for further study of their physical properties.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ниобат лития</kwd><kwd>танталат лития</kwd><kwd>сегнетоэлектрические кристаллы</kwd><kwd>высокотемпературная монодоменнизация</kwd><kwd>выращивание кристаллов</kwd><kwd>актюаторы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>lithium niobate</kwd><kwd>lithium tantalate</kwd><kwd>ferroelectric crystals</kwd><kwd>high-temperature single-domainization</kwd><kwd>crystal growth</kwd><kwd>actuators</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Федеральное государственное бюджетное учреждение науки Институт проблем технологии микроэлектроники и особочистых материалов Российской академии наук</funding-statement><funding-statement xml:lang="en">Institute of Microelectroniccs Technology and High Purity Materials 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">Кайно Г. 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