Synthesis and Luminescent Properties of Gadolinium Tantalum Niobates Gd(NbxTa1 – x)O4


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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.

作者简介

E. Ivanova

Ioffe Institute

Email: vladislav2033@yandex.ru
俄罗斯联邦, 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
俄罗斯联邦, Apatity, Murmansk oblast, 184209

V. Kravets

Ioffe Institute

编辑信件的主要联系方式.
Email: vladislav2033@yandex.ru
俄罗斯联邦, St. Petersburg

K. Orekhova

Ioffe Institute

Email: vladislav2033@yandex.ru
俄罗斯联邦, St. Petersburg

G. Gusev

Ioffe Institute

Email: vladislav2033@yandex.ru
俄罗斯联邦, St. Petersburg

A. Trofimov

Ioffe Institute

Email: vladislav2033@yandex.ru
俄罗斯联邦, 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
俄罗斯联邦, Apatity, Murmansk oblast, 184209

M. Yagovkina

Ioffe Institute

Email: vladislav2033@yandex.ru
俄罗斯联邦, St. Petersburg

A. Averin

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences

Email: vladislav2033@yandex.ru
俄罗斯联邦, Moscow

M. Zamoryanskaya

Ioffe Institute

Email: vladislav2033@yandex.ru
俄罗斯联邦, St. Petersburg

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