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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">sibsutis</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник СибГУТИ</journal-title><trans-title-group xml:lang="en"><trans-title>The Herald of the Siberian State University of Telecommunications and Information Science</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-6920</issn><publisher><publisher-name>СибГУТИ</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">sibsutis-638</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>Температурное эхо 
сверхпроводящего фазового перехода</article-title><trans-title-group xml:lang="en"><trans-title>The temperature echo of the superconducting phase transition</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>Наумов</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Naumov</surname><given-names>V. N.</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>Беспятов</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bespyatov</surname><given-names>M. A.</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>Немов</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Nemov</surname><given-names>N. A.</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>Атаке Тоору</surname></name><name name-style="western" xml:lang="en"><surname>Atake</surname><given-names>T. ..</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Институт неорганической химии им. А.В. Николаева СО РАН</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2009</year></pub-date><pub-date pub-type="epub"><day>16</day><month>01</month><year>2023</year></pub-date><volume>0</volume><issue>3</issue><fpage>79</fpage><lpage>93</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Наумов В.Н., Беспятов М.А., Немов Н.А., Атаке Тоору T..., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Наумов В.Н., Беспятов М.А., Немов Н.А., Атаке Тоору T...</copyright-holder><copyright-holder xml:lang="en">Naumov V.N., Bespyatov M.A., Nemov N.A., Atake T...</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://vestnik.sibsutis.ru/jour/article/view/638">https://vestnik.sibsutis.ru/jour/article/view/638</self-uri><abstract><p>Представлены результаты анализа экспериментальной теплоёмкости в широкой области нормального и сверхпроводящего состояний для образцов (R)Ba2Cu3O6+x (R = Y, Gd, Tm, Ho) с содержанием кислорода, близким к оптимальному допированию. Для всех образцов была обнаружена аномалия Th, которая устойчиво проявляется в интервале 250 - 290 K. Аномалия Тh по виду напоминает явление, связанное с фазовым переходом. Показано, что температура аномалии Тh коррелирует с температурой сверхпроводящей аномалии Tc и величины Th и Tc связаны соотношением Th ≈ 3Tc, что интерпретируется как «температурное эхо». Аномалии при температуре 3Tc также наблюдаются и в других сверхпроводниках с сильной связью: Hg и Nb3Ge. Это позволяет предполагать, что явление «температурного эха» имеет общий характер и может наблюдаться не только в купратных высокотемпературных сверхпроводниках.</p></abstract><trans-abstract xml:lang="en"><p>An analysis of experimental heat capacity in а wide area is presented for series of samples (R)Ba2Cu3O6+x (R= Y, Gd, Tm, Ho) with the oxygen maintenance near optimal to value. For all samples the anomaly Th was discovered which occurred steadily in the interval 250-290 K. The anomaly Th looks like a phase transition anomaly. It was shown that the anomaly Th correlates with superconducting anomaly Tc, temperatures Th and Tc being connected by the ratio Th ≈ 3Tc, that is interpreted, as temperature «echo». Anomalies at 3Tc were also detected in heat capacity of low temperature superconductors Hg and Nb3Ge. It allows to assume, that the phenomenon of a temperature «echo», has the general of character, and can be observed not only in cuprate high-temperature superconductors.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>теплоёмкость</kwd><kwd>сверхпроводимость</kwd><kwd>фазовые переходы</kwd><kwd>псевдощелевые явления</kwd><kwd>сверхпроводники с сильной связью</kwd></kwd-group><kwd-group xml:lang="en"><kwd>heat capacity</kwd><kwd>superconductivity</kwd><kwd>phase transition</kwd><kwd>pseudogap phenomena</kwd><kwd>superconductors with strong binding</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">Садовский М. В. Псевдощель в высокотемпературных сверхпроводниках // УФН. 2001. Т. 171, № 5. С. 539 - 564.</mixed-citation><mixed-citation xml:lang="en">Садовский М. В. Псевдощель в высокотемпературных сверхпроводниках // УФН. 2001. Т. 171, № 5. 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