Библиотека института физики им. Л.В. Киренского СО РАН

Главная

Базы данных

Труды сотрудников ИФ СО РАН - результаты поиска

Вид поиска

Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

Область поиска

Формат представления найденных документов:
полный	информационный	краткий

Поисковый запрос: (<.>K=zircon<.>)

Общее количество найденных документов : 1

Shchapova, Yuliya V..
Structural characteristics of radiation-amorphized ZrSiO4:U,Th according to Raman spectroscopy of Boson peak / Yu. V. Shchapova, A. S. Krylov, S. L. Votyakov // J. Raman. Spectrosc. - 2023. - Vol. 54, Is. 6. - P. 662-673, DOI 10.1002/jrs.6526. - Cited References: 66. - The study was carried out within IGG UB RAS State assignment, registration number 123011800012-9 (YVS and SLV). The authors thank Dmitry Zamyatin for performing electron probe microanalysis of zircon chemical composition. The authors are grateful to Olga Galakhova for X-ray diffraction measurements. The equipment of the «Geoanalitik» shared research facilities of the IGG UB RAS was used, the re-equipment and comprehensive development of which is financially supported by the grant of the Ministry of Science and Higher Education of the Russian Federation, Agreement No. 075-15-2021-680 (YVS and SLV). The temperature Raman experiments were performed in the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center ‘Krasnoyarsk Science Center SB RAS’ . - ISSN 0377-0486. - ISSN 1097-4555
Кл.слова (ненормированные):
amorphous-crystalline structure -- Boson peak -- radiation damage -- zircon
Аннотация: The structure of the amorphous fraction and the tensile-compressive stressesin amorphous-crystalline radiation-damaged zircon ZrSiO:U,Th depending on radiation dose and temperature (8–350 K) are investigated according to Raman spectroscopy of Boson peak for the first time. The Boson peak at 60–70 cm-1 associated with localized phonon states in the amorphous fraction (fa) is recorded at low temperatures (T ˂ 100 K) for samples with fa ˂ 30% and over the entire temperature range 8–350 K for fa ˃ 70%. The wider localized states distribution in the latter case is considered as a sign of the amorphous phase structure evolution with an increase in radiation dose. The estimates of anatomic correlation radius based on the Ioffe–Regel criterion are similar to those in glasses, Rc2:0 – 2:3 nm. The monotonic increase in Rc value during heating of zircon with fa ˃ 70% is governed by thermal expansion of the percolating amorphous fraction. The nonmonotonic variations of the Rc value in zircon with fa ˂ 30% is determined by the stresses in the amorphous fraction due to the mismatch in thermal expansion coefficient (CTE) and elastic moduli of the amorphous and crystalline phases depending on temperature; a change in the sign of the crystalline fraction CTE at 30 K is assumed. The Boson peak disappearance at 100 K in zircon with fa ˂ 30% during heating conforms to with the violation of the phonon localization as a consequence of amorphous fraction contraction and partial ordering. The data obtained are important for predicting the thermal and mechanical properties of heterogeneous radiation-damaged materials and nanocomposites.

Смотреть статью,
WOS
Держатели документа:
Zavaritsky Institute of Geology and Geochemistry of the Ural Branch of the Russian Academy of Sciences,Yekaterinburg, Russia
Ural Federal University named after the first President of Russia B. N. Yeltsin,Yekaterinburg, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS,Krasnoyarsk, Russia

Доп.точки доступа:
Krylov, A. S.; Крылов, Александр Сергеевич; Votyakov, Sergei L.
}
Найти похожие

Тематический навигатор

Другие библиотеки

Центральная Научная Библиотека КНЦ СО РАН

Библиотека института биофизики

Библиотека института химии и химический технологии

Библиотека института вычислительного моделирования

Библиотека института леса

Библиотека СФУ

Краевая научная библиотека

© Международная Ассоциация пользователей и разработчиков электронных библиотек и новых информационных технологий
(Ассоциация ЭБНИТ)