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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">bsuir</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады БГУИР</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady BGUIR</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1729-7648</issn><issn pub-type="epub">2708-0382</issn><publisher><publisher-name>БГУИР</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">bsuir-364</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></article-categories><title-group><article-title>КВАНТОВО-КИНЕТИЧЕСКАЯ ТЕОРИЯ СОСТОЯНИЯ СМЕШАННОЙ ВАЛЕНТНОСТИ МЕТАЛЛИЧЕСКИХ ЦЕНТРОВ ПЕРОВСКИТОВЫХ СЕГНЕТОЭЛЕКТРИКОВ</article-title><trans-title-group xml:lang="en"><trans-title>Quantum kinetic theory of mixed-valence state for metal centers of perovskite ferroelectrics</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>Гурский</surname><given-names>Л. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Hurski</surname><given-names>L. I.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</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>Крылова</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Krylova</surname><given-names>H. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Белорусский государственный университет информатики и радиоэлектроники</institution><country>Belarus</country></aff><aff xml:lang="ru" id="aff-2"><institution>Белорусский государственный университет</institution><country>Belarus</country></aff><pub-date pub-type="collection"><year>2014</year></pub-date><pub-date pub-type="epub"><day>03</day><month>06</month><year>2019</year></pub-date><volume>0</volume><issue>6</issue><fpage>91</fpage><lpage>100</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гурский Л.И., Крылова Г.В., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Гурский Л.И., Крылова Г.В.</copyright-holder><copyright-holder xml:lang="en">Hurski L.I., Krylova H.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://doklady.bsuir.by/jour/article/view/364">https://doklady.bsuir.by/jour/article/view/364</self-uri><abstract><p>Предложены квантово-статистическое описание когерентных дипольно-активных состояний и квантово-кинетическая теория состояния смешанной валентности металлических центров перовскитовых сегнетоэлектриков. Для слоистых перовскитов с линейным электронным спектром это позволило установить квадратичную зависимость распределения зарядовой плотности от импульса и объяснить стабилизацию вектора дипольной поляризации резонанса между d ( f )- и s ( p )- электронными состояниями.</p></abstract><trans-abstract xml:lang="en"><p>Quantum-statistical description of coherent dipole-active states and quantum kinetic theory of mixed-valence state for metal centers of perovskite ferroelectrics is introduced. For layered perovskites with linear electron spectrum it allowed to establish a quadratic dependence of charge density distribution on momentum. It has been shown that a dipole polarization vector of resonance between d ( f )- and s ( p )-electron states becomes stable due to this found dependence.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>квантовые процессы</kwd><kwd>перовскитовые сегнетоэлектрики</kwd><kwd>когерентное состояние</kwd><kwd>поляризация</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">Fong D.D. // Science. 2004. Vol. 304. P. 1650.</mixed-citation><mixed-citation xml:lang="en">Fong D.D. // Science. 2004. Vol. 304. P. 1650.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Shakmanov V.V., Yakunin S.I., Spivak G.V. et. al. // Krystallographiya. 1972. Vol. 17. P. 351.</mixed-citation><mixed-citation xml:lang="en">Shakmanov V.V., Yakunin S.I., Spivak G.V. et. al. // Krystallographiya. 1972. Vol. 17. 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