Transparent glass–ceramics with (Eu3+,Yb3+):YNbO4 nanocrystals: Crystallization, structure, optical spectroscopy and cooperative upconversion

Loiko, Pavel; Дымшиц, О. С.; Алексеева, И. П.; Жилин, А. А.; Tsenter, M. Ya.; Vilejshikova, Elena; Bogdanov, K. V.; Mateos, Xavier; Yumashev, K. V.

doi:10.1016/j.jlumin.2016.06.042

Cited by 36 publications

(17 citation statements)

References 81 publications

(96 reference statements)

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“…In the papers [3,4] the possibility of high-temperature synthesis of glass-ceramic materials with yttrium niobate crystallites was shown. In the course of previous studies [5,6] it was found that the boron-sodium oxide matrix is extremely promising for the low-temperature synthesis of REI-doped yttrium niobate.…”

Section: Introductionmentioning

confidence: 99%

Low-Temperature Synthesis of Glass-Ceramics with YNbO-=SUB=-4-=/SUB=- : Tb-=SUP=-3+-=/SUP=- Crystallites

Kravets

Иванова

Yagovkina

et al. 2022

Optics and Spectroscopy

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The main aim of this work was to perform low-temperature synthesis of glass-ceramics with YNbO4 : Tb3+ crystalline inclusions and study the structural and luminescent properties of the samples synthesized. In the framework of this work, inclusions crystallized in the system B2O5-Na2O-Y2O3 -Nb2O5-Tb4O7 (Bura). It was shown that in this system, regardless of the precursors in the samples, YNbO4 : Tb3+ in an amount of more than 70% of the total crystalline component. The most promising system for the synthesis of activated glass-ceramics with YNbO4 proved to be synthesized from oxide precursors; it crystallized more than 95% YNbO4 : Tb3+ of the total crystalline component. The luminescent properties of crystalline inclusions were studied using the local cathodoluminescence method. The composition and structure of glass ceramics were studied by methods X-ray spectral microanalysis and X-ray diffraction phase analysis. Keywords: YNbO4 : Tb3+, luminescence, glass-ceramics.

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Section: Introductionmentioning

confidence: 99%

Low-Temperature Synthesis of Glass-Ceramics with YNbO-=SUB=-4-=/SUB=- : Tb-=SUP=-3+-=/SUP=- Crystallites

Kravets

Иванова

Yagovkina

et al. 2022

Optics and Spectroscopy

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“…Стеклокерамика на основе ниобатов редкоземельных элементов обладает интенсивной люминесценцией под воздействием ионизирующего излучения. Результаты современных исследований по синтезу стеклокристаллических материалов на основе ортониобатов приводятся в [6,7]. Основным недостатком материалов, синтезированных в рамках данных исследований, является высокая температура синтеза (около 1600 • С).…”

Section: Introductionunclassified

Низкотемпературный синтез стеклокерамики с кристаллитами YNbO-=SUB=-4-=/SUB=- : Eu-=SUP=-3+-=/SUP=-

Кравец¹,

Иванова²,

Орехова³

et al. 2021

Оптика И Спектроскопия

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The main purpose of this work was to carry out a low-temperature synthesis of glass ceramics containing YNbO4:Eu3+ crystallites and to study the structural and luminescent properties of the obtained samples. Within the framework of this work, the inclusions that crystallized under the conditions of low-temperature synthesis in the systems of SiO2-Na2O-K2O-Y2O3-Nb2O5-Eu2O3 (SiNaK) and B2O5-Na2O-Y2O3-Nb2O5-Eu2O3 (BNa) were investigated for the first time. It was shown that YNbO4: Eu3+ crystallized in both considered systems. In the SiNaK system the crystallization of SiO2 also occurred (quartz, crisstabolite, and tridymite) under the selected conditions. The BNa system proved to be the most promising for the synthesis of activated glass-ceramics with YNbO4, since the required crystallites crystallized only in ithis system. The luminescent properties of crystalline inclusions were investigated using the local cathodoluminescence technique. The composition and structure of glass ceramics were studied by electron-probe microanalysis and X-ray diffraction phase analysis.

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“…For lanthanide Ln (Ln = Nd, Sm, Eu and Gd) orthoniobates, there are two crystalline forms, the low temperature M-phase isostructural with monoclinic form of the fergusonite and the T-phase corresponding to tetragonal scheelite. The transition between the two phases occurs reversibly in the range 500-800°C [3]. The NdTaO4 crystallize in monoclinic form, besides their ability to posses two-fergusonite-type structures, first known as M-type (I2/a) and second called M´-type (P2/a).…”

Section: Introductionmentioning

confidence: 99%

Polymorphs of Neodymium Niobate and Tantalate Thin Films Prepared by Sol-Gel Method

Bruncková

Medvecký

Múdra

et al. 2019

Powder Metallurgy Progress

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Neodymium niobate NdNbO4 (NNO) and tantalate NdTaO4 (NTO) thin films (~100 nm) were prepared by sol-gel/spin-coating process on Pb(Zr0.52Ti0.48)O3/Al2O3 substrates with annealing at 1000°C. The precursors of films were synthesized using Nb or Ta tartrate complexes. The XRD results of NNO and NTO films confirmed tetragonal T-NdNbO4 and T-NdTaO4 phases, respectively, with traces of monoclinic MNdNbO4 and M´-NdTaO4. The surface morphology and topography were investigated by SEM and AFM analysis. NTO was smoother with roughness 5.24 nm in comparison with NNO (6.95 nm). In the microstructure of NNO, small spherical (~ 20-50 nm) T-NdNbO4 and larger needle-like particles (~100 nm) of M-NdNbO4 phase were observed. The compact clusters composed of fine spherical T-NdTaO4 particles (~ 50 nm) and cuboidal M´-NdTaO4 particles (~ 100 nm) were found in NTO. The results of this work can contribute to formation of different polymorphs of films for the application in environmental electrolytic thin film devices.

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Transparent glass–ceramics with (Eu3+,Yb3+):YNbO4 nanocrystals: Crystallization, structure, optical spectroscopy and cooperative upconversion

Cited by 36 publications

References 81 publications

Low-Temperature Synthesis of Glass-Ceramics with YNbO-=SUB=-4-=/SUB=- : Tb-=SUP=-3+-=/SUP=- Crystallites

Low-Temperature Synthesis of Glass-Ceramics with YNbO-=SUB=-4-=/SUB=- : Tb-=SUP=-3+-=/SUP=- Crystallites

Низкотемпературный синтез стеклокерамики с кристаллитами YNbO-=SUB=-4-=/SUB=- : Eu-=SUP=-3+-=/SUP=-

Polymorphs of Neodymium Niobate and Tantalate Thin Films Prepared by Sol-Gel Method

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