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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">phmath</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Государственного университета просвещения. Серия: Физика-Математика</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Federal State University of Education. Series: Physics and Mathematics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2949-5083</issn><issn pub-type="epub">2949-5067</issn><publisher><publisher-name>Federal State University of Education</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">phmath-210</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>МЕТОДИКА ИССЛЕДОВАНИЯ АНИЗОТРОПИИ СКОРОСТИ
УЛЬТРАЗВУКА В НЕМАТИКАХ ПРИ ВЫСОКИХ ДАВЛЕНИЯХ</article-title><trans-title-group xml:lang="en"><trans-title>TECHNIQUE OF RESEARCH OF ANISOTROPY OF SPEE
OF ULTRASOUND IN NEMATIC AT HIGH PRESSURES</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>Банникова</surname><given-names>Е. М.</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>Богданов</surname><given-names>Д. Л.</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>Геворкян</surname><given-names>Э. В.</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>Обыденков</surname><given-names>Ю. Н.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Московский государственный областной университет (МГОУ)</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2011</year></pub-date><pub-date pub-type="epub"><day>08</day><month>01</month><year>2023</year></pub-date><volume>0</volume><issue>1</issue><fpage>29</fpage><lpage>35</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Банникова Е.М., Богданов Д.Л., Геворкян Э.В., Обыденков Ю.Н., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Банникова Е.М., Богданов Д.Л., Геворкян Э.В., Обыденков Ю.Н.</copyright-holder><copyright-holder xml:lang="en">Банникова Е.М., Богданов Д.Л., Геворкян Э.В., Обыденков Ю.Н.</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://www.physmathmgou.ru/jour/article/view/210">https://www.physmathmgou.ru/jour/article/view/210</self-uri><abstract><p>Представлена методика исследования анизотропии скорости ультразвука
в нематике Н-37 в температурном интервале от 25 до 70 при различных давлениях.
Во всех исследованных температурных интервалах существования нематической мезофазы, скорость ультразвука больше в случае параллельной ориентации вектора
магнитной индукции и волнового вектора по сравнению с перпендикулярной ориентацией. Вдали (Т≥10К) от фазового перехода относительная анизотропия скорости
ультразвука практически не зависит от температуры и имеет малое значение. Максимальное влияние магнитного поля на скорость ультразвука имеет место за Т=5 К от
температуры просветления.</p></abstract><trans-abstract xml:lang="en"><p>The technique of research of anisotropy of speed of ultrasound in nematic Н-37 in
a temperature interval from 25 to 70 0С is presented at various pressure. In all investigated
temperature intervals of existence of a nematic mesophase, speed of ultrasound is more in
case of parallel orientation of a vector of a magnetic induction and a wave vector in comparison
with perpendicular orientation. In the distance (Т≥10К) from phase transition relative
anisotropy of speed of ultrasound practically doesn't depend on temperature and has
small value. The maximum influence of a magnetic field on speed of ultrasound takes place
for Т=5 to from enlightenment temperature.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>методика</kwd><kwd>анизотропия скорости ультразвука</kwd><kwd>нематическая фаза ЖК</kwd><kwd>магнитное поле</kwd><kwd>температура</kwd><kwd>давление</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Technique</kwd><kwd>anisotropy анизотропия of speed of ultrasound</kwd><kwd>nematic нематическая a phase LC ЖК</kwd><kwd>magnetic field</kwd><kwd>temperature</kwd><kwd>pressure</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">Mullen, M.E., Luthi B., Stephen M.J. Phys.Rev.Lett [Text]. 1972, v.28, p.799.</mixed-citation><mixed-citation xml:lang="en">Mullen, M.E., Luthi B., Stephen M.J. Phys.Rev.Lett [Text]. 1972, v.28, p.799.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Мезон, У. Физическая Акустика [Текст].М.: Мир. 1973.</mixed-citation><mixed-citation xml:lang="en">Мезон, У. Физическая Акустика [Текст].М.: Мир. 1973.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
