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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">npe</journal-id><journal-title-group><journal-title xml:lang="ru">Ядерная физика и инжиниринг</journal-title><trans-title-group xml:lang="en"><trans-title>Nuclear Physics and Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2079-5629</issn><issn pub-type="epub">2079-5637</issn><publisher><publisher-name>МИФИ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.56304/S2079562926010082</article-id><article-id custom-type="edn" pub-id-type="custom">BBQYOI</article-id><article-id custom-type="elpub" pub-id-type="custom">npe-594</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>Перспективные конструкционные материалы</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Promising Structural Materials</subject></subj-group></article-categories><title-group><article-title>ПОЗИТРОННАЯ ДИАГНОСТИКА FE–GA СПЛАВОВ</article-title><trans-title-group xml:lang="en"><trans-title>POSITRON DIAGNOSTICS OF FE–GA ALLOYS</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>Дубов</surname><given-names>Л. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Dubov</surname><given-names>L. Yu.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Штоцкий</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shtotsky</surname><given-names>Yu. V.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Илюхина</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ilyukhina</surname><given-names>O. V.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Акмалова</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Akmalova</surname><given-names>Yu. A.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Будаева</surname><given-names>Л. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Budaeva</surname><given-names>L. I.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Степанов</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Stepanov</surname><given-names>S. V.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Курчатовский комплекс теоретической и экспериментальной физики, Национальный исследовательский центр “Курчатовский институт”;&#13;
Национальный исследовательский ядерный университет “МИФИ”</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Reasearch Centre “Kurchatov Institute”;&#13;
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Курчатовский комплекс теоретической и экспериментальной физики, Национальный исследовательский центр “Курчатовский институт”</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Reasearch Centre “Kurchatov Institute”</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Национальный исследовательский ядерный университет “МИФИ”</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>16</day><month>04</month><year>2026</year></pub-date><volume>17</volume><issue>1</issue><fpage>12</fpage><lpage>21</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Дубов Л.Ю., Штоцкий Ю.В., Илюхина О.В., Акмалова Ю.А., Будаева Л.И., Степанов С.В., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Дубов Л.Ю., Штоцкий Ю.В., Илюхина О.В., Акмалова Ю.А., Будаева Л.И., Степанов С.В.</copyright-holder><copyright-holder xml:lang="en">Dubov L.Y., Shtotsky Y.V., Ilyukhina O.V., Akmalova Y.A., Budaeva L.I., Stepanov S.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://npe.elpub.ru/jour/article/view/594">https://npe.elpub.ru/jour/article/view/594</self-uri><abstract><p>В работе приведены результаты исследования поведения вакансионных дефектов в сплавах (Fe100–xGax), содержащих от 16.5 до 33% Ga, полученные с помощью спектроскопии времени жизни позитронов (PALS). Установлено, что поведение вакансий в процессах упорядочения в сплавах с содержанием галлия x &gt; 25 существенно отличается от сплавов с x &lt; 25. Все исследованные сплавы, закаленные при 1000°С, содержат высокую концентрацию вакансионно-углеродных (VC) комплексов (&gt; 2 · 10–4 ат–1), в которых время жизни позитронов линейно изменяется от ~ 160 пс при x = 16.5% до ~ 180 пс при x = 33% Ga. Наблюдаемые изменения времени жизни позитронов и соответствующие изменения концентрации вакансий коррелируют с периодами перестройки фазового состава образцов.</p></abstract><trans-abstract xml:lang="en"><p>In the present work we study dynamics of vacancy-type defects in Fe–Ga alloys (galfenols) with gallium content ranging from 16.5 to 33.0%. At the beginning, a brief overview of the basic properties and crystal structure of Fe–Ga alloys is presented. Positron Annihilation Lifetime Spectroscopy (PALS), Neutron Diffraction and X-Ray Diffraction (XRD) methods show a high degree of correlation in changes in the positron lifetime and phase composition of the samples. A comparison of positron data and the results of structural analysis reveal notably different behaviour of defects ordering in alloys with gallium content x higher and lower than 25%. All the alloys quenched at 1000°C demonstrate high concentration of iron monovacancies (&gt;2 × 10−4 at−1), and positron lifetime linearly grows from ~160 ps at x = 16.5% to ~180 ps at x = 33.0% (tangent 1.5 ps/1%Ga). The observed changes of the positron lifetime correlate with phase composition of the samples.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>галфенолы</kwd><kwd>вакансионные комплексы</kwd><kwd>время жизни позитронов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>galphenols</kwd><kwd>vacancy complexes</kwd><kwd>positron lifetime</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы выражают глубокую благодарность сотрудникам Национального университета науки и технологии “МИСИС” (Москва) профессору, д.ф.-м.н. Головину Игорю Станиславовичу и к.т.н. Палачевой Валерии Валерьевне за изготовление серий образцов и обсуждение полученных результатов. Работа выполнена в рамках финансирования государственного задания НИЦ “Курчатовский институт”. Экспериментальная часть работы осуществлена при поддержке и с использованием оборудования Центра коллективного пользования КАМИКС (http://kamiks.itep.ru/; НИЦ “Курчатовский институт”).</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">Clark A.E., Restorff J.B., Wun-Fogle M., Lograsso T.A., Schlagel D.L. // IEEE Trans. Magn. 2000. V. 36. P. 3238.</mixed-citation><mixed-citation xml:lang="en">Clark A.E., Restorff J.B., Wun-Fogle M., Lograsso T.A., Schlagel D.L. // IEEE Trans. Magn. 2000. V. 36. P. 3238.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Atulasimha J., Flatau A.B. // Smart Mater. Struct. 2011. V. 20. P. 043001.</mixed-citation><mixed-citation xml:lang="en">Atulasimha J., Flatau A.B. // Smart Mater. Struct. 2011. V. 20. 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