Synthesis, X-Ray Structure Analysis, and Raman Spectroscopy of R2TiO5-Based (R = Sc, Y) Solid Solutions Full article
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Inorganic Materials
ISSN: 0020-1685 , E-ISSN: 1608-3172 |
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| Output data | Year: 2016, Volume: 52, Number: 5, Pages: 483-489 Pages count : 7 DOI: 10.1134/s0020168516050095 | ||||||
| Tags | synchrotron X-ray diffraction, Raman spectra, fluorite- and pyrochlore-like Sc(Y)2TiO5-based solid solutions | ||||||
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Abstract:
Order–disorder transitions in xR2O3 · (1 − x)TiO2 (R = Sc, 0.4 ≤ x ≤ 0.5; R = Y, 0.5 ≤ x ≤ 0.6) solid solutions with highly imperfect fluorite-derived structures have been studied using monochromatic synchrotron X-ray diffraction and Raman spectroscopy. The results demonstrate that the synthesis process leads to the formation of a fluorite-like (Fm3m) disordered phase and a nanoscale (~10–100 nm) pyrochlore-like (Fd3m) ordered phase of the same composition, coherent with the disordered phase. We have determined their lattice parameters. The Raman spectra of Sc2TiO5 (Y2TiO5) contain broad lines in low- and high-frequency regions: at 190, 350, and 775 (134, 188, 365, 404, and 727) cm−1. These lines are characteristic of a pyrochlore-like phase with a varying degree of order and a disordered fluorite-like phase, respectively. The pyrochlore-like phase Y2Ti2O7 has two strong Raman peaks in the low-frequency region: at 312 and 527 cm−1. The formation of nanodomains with different degrees of order is caused by the internal stress that arises from the high density of structural defects in the unit cells of the solid solutions.
Cite:
Lyashenko L.P.
, Shcherbakova L.G.
, Karelin A.I.
, Smirnov V.A.
, Kulik E.S.
, Svetogorov R.D.
, Zubavichus Y.V.
Synthesis, X-Ray Structure Analysis, and Raman Spectroscopy of R2TiO5-Based (R = Sc, Y) Solid Solutions
Inorganic Materials. 2016. V.52. N5. P.483-489. DOI: 10.1134/s0020168516050095 WOS Scopus РИНЦ AN OpenAlex
Synthesis, X-Ray Structure Analysis, and Raman Spectroscopy of R2TiO5-Based (R = Sc, Y) Solid Solutions
Inorganic Materials. 2016. V.52. N5. P.483-489. DOI: 10.1134/s0020168516050095 WOS Scopus РИНЦ AN OpenAlex
Original:
Ляшенко Л.П.
, Щербакова Л.Г.
, Карелин А.И.
, Смирнов В.А.
, Кулик Э.С.
, Светогоров Р.Д.
, Зубавичус Я.В.
Синтез и исследование методами рентгеноструктурного анализа и спектроскопии комбинационного рассеяния света твердых растворов на основе R2TiO5 (R – Sc, Y)
Неорганические материалы. 2016. Т.52. №5. С.530-536. DOI: 10.7868/S0002337X16050092 РИНЦ OpenAlex
Синтез и исследование методами рентгеноструктурного анализа и спектроскопии комбинационного рассеяния света твердых растворов на основе R2TiO5 (R – Sc, Y)
Неорганические материалы. 2016. Т.52. №5. С.530-536. DOI: 10.7868/S0002337X16050092 РИНЦ OpenAlex
Dates:
| Submitted: | May 25, 2015 |
| Accepted: | Nov 11, 2015 |
| Published print: | May 1, 2016 |
| Published online: | May 13, 2016 |
Identifiers:
| Web of science: | WOS:000376259200008 |
| Scopus: | 2-s2.0-84969771766 |
| Elibrary: | 27153951 |
| Chemical Abstracts: | 2016:782472 |
| OpenAlex: | W2350748436 |