Synthesis and Luminescent Properties of Gadolinium Tantalum Niobates Gd(NbxTa1 – x)O4
- Авторы: Ivanova E.V.1, Masloboeva S.M.2, Kravets V.A.1, Orekhova K.N.1, Gusev G.A.1, Trofimov A.N.1, Shcherbina O.B.2, Yagovkina M.A.1, Averin A.A.3, Zamoryanskaya M.V.1
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Учреждения:
- Ioffe Institute
- Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Science Center, Russian Academy of Sciences
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences
- Выпуск: Том 127, № 6 (2019)
- Страницы: 1011-1017
- Раздел: Spectroscopy of Condensed Matter
- URL: https://ogarev-online.ru/0030-400X/article/view/166174
- DOI: https://doi.org/10.1134/S0030400X19120348
- ID: 166174
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Аннотация
The feasibility of synthesizing gadolinium tantalum niobates by the liquid-phase method was demonstrated. The methods of X-ray diffraction, electron probe microanalysis, local cathodoluminescence, and photoluminescence were applied to study the samples. It was shown that under the selected synthesis conditions (T ~ 1400°C for 3 hours), no solid solution of niobium-tantalum was formed in the powder samples. When obtaining ceramic samples, it was possible to obtain a solid solution and to study the dependence of the luminescence intensity on the niobium content upon excitation of the samples by an electron beam. The maximum luminescence intensity was observed in the sample with the composition of GdNb0.9Ta0.1O4. It was shown that the inhomogeneity of luminescence is not related to fluctuations in composition, but is related to the inhomogeneous distribution of vacancy centers, which are luminescence centers.
Об авторах
E. Ivanova
Ioffe Institute
Email: vladislav2033@yandex.ru
Россия, St. Petersburg
S. Masloboeva
Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Science Center, Russian Academy of Sciences
Email: vladislav2033@yandex.ru
Россия, Apatity, Murmansk oblast, 184209
V. Kravets
Ioffe Institute
Автор, ответственный за переписку.
Email: vladislav2033@yandex.ru
Россия, St. Petersburg
K. Orekhova
Ioffe Institute
Email: vladislav2033@yandex.ru
Россия, St. Petersburg
G. Gusev
Ioffe Institute
Email: vladislav2033@yandex.ru
Россия, St. Petersburg
A. Trofimov
Ioffe Institute
Email: vladislav2033@yandex.ru
Россия, St. Petersburg
O. Shcherbina
Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Science Center, Russian Academy of Sciences
Email: vladislav2033@yandex.ru
Россия, Apatity, Murmansk oblast, 184209
M. Yagovkina
Ioffe Institute
Email: vladislav2033@yandex.ru
Россия, St. Petersburg
A. Averin
Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences
Email: vladislav2033@yandex.ru
Россия, Moscow
M. Zamoryanskaya
Ioffe Institute
Email: vladislav2033@yandex.ru
Россия, St. Petersburg
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