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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">zldm</journal-id><journal-title-group><journal-title xml:lang="ru">Заводская лаборатория. Диагностика материалов</journal-title><trans-title-group xml:lang="en"><trans-title>Industrial laboratory. Diagnostics of materials</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1028-6861</issn><issn pub-type="epub">2588-0187</issn><publisher><publisher-name>ООО «Издательство «ТЕСТ-ЗЛ»</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zldm-171</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>ИССЛЕДОВАНИЕ СТРУКТУРЫ И СВОЙСТВ. ФИЗИЧЕСКИЕ МЕТОДЫ ИССЛЕДОВАНИЯ И КОНТРОЛЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TESTING OF STRUCTURE AND PARAMETERS. PHYSICAL METHODS OF TESTING AND QUALITY CONTROL</subject></subj-group></article-categories><title-group><article-title>Определение размера частиц ультрадисперсних порошков твердых растворов манганитов (Nd, Gd)xCa1_xMnO3 методом фотонной корреляционной спектроскопии</article-title><trans-title-group xml:lang="en"><trans-title>Determination of the Particle Size of Ultrafine Powders of Manganite Solid Solutions (Nd, Gd)xCa1-xMnO3 by Photon Correlation Spectroscopy</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>Эстемирова</surname><given-names>С. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Estemirova</surname><given-names>S. Kh.</given-names></name></name-alternatives><email xlink:type="simple">esveta100@mail.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>Печищева</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pechischeva</surname><given-names>N. V.</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>Кожина</surname><given-names>Г. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozhina</surname><given-names>G. A.</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>Институт металлургии УрО РАН</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>01</day><month>12</month><year>2015</year></pub-date><volume>81</volume><issue>12</issue><fpage>26</fpage><lpage>31</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Эстемирова С.Х., Печищева Н.В., Кожина Г.А., 2015</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="ru">Эстемирова С.Х., Печищева Н.В., Кожина Г.А.</copyright-holder><copyright-holder xml:lang="en">Estemirova S.K., Pechischeva N.V., Kozhina G.A.</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.zldm.ru/jour/article/view/171">https://www.zldm.ru/jour/article/view/171</self-uri><abstract><p>Показана перспективность применения метода фотонной корреляционной спектроскопии (метод динамического рассеяния света) для определения размеров частиц ультрадисперсных порошков перовскитоподобных манганитов редкоземельных элементов, измельченных в высокоэнергетической планетарной мельнице. Основное внимание уделено проблеме стабилизации порошков в дисперсионной жидкости перед измерением. Из двух исследованных ПАВ наилучшие стабилизирующие свойства показал хлорид бензалкония. Склонный к агломерации порошок подвергали ультразвуковой обработке в течение 1 ч. Результаты измерений частиц методом динамического рассеяния света сравнивали с данными рентгеновского дифракционного анализа.</p></abstract><trans-abstract xml:lang="en"><p>The prospects of using photon correlation spectroscopy (dynamic light scattering method) in determination of the particle size in ultrafine powders of perovskite-like rare earth manganites milled in a high energy planetary mill are discussed. The main attention is paid to stabilizing of the powder in a dispersion liquid before measurements. Benzalkonium chloride exhibited the best stabilizing properties compared to other tested surfactants. The powder susceptible to agglomeration is subjected to ultrasonic treatment for 1 h. The results of the particles size measurement obtained by dynamic light scattering are compared with data of x-ray diffraction analysis.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>photon correlation spectroscopy</kwd><kwd>x-ray diffraction</kwd><kwd>particle size</kwd><kwd>the size of the coherent scattering region</kwd><kwd>rare earth manganites</kwd><kwd>фотонная корреляционная спектроскопия</kwd><kwd>рентгеновская дифракция</kwd><kwd>размер частиц</kwd><kwd>размер ОКР</kwd><kwd>манганиты редкоземельных элементов</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">Jirak Z., Damay F., Hervieu M., Martin C. Magnetism and charge ordering in Pr0.5CaxSr0.5 xMnO3 (x = 0.09 and 0.5) / Phys. Rev. B. 2000. Vol. 61. P. 1181.</mixed-citation><mixed-citation xml:lang="en">Jirak Z., Damay F., Hervieu M., Martin C. 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