Journal of Alloys and Compounds, volume 910, pages 164922
Multiscale study on the formation and evolution of the crystal and local structures in lanthanide tungstates Ln2 (WO4 )3
Popov Victor V
1, 2
,
Yastrebtsev A A
1
,
Rudakov S.G.
1
,
Ivanov A
1
,
Gaynanov Bulat R
1
,
Svetogorov Roman
2
,
Zubavichus Y V
3
,
Molokova A Yu
1
,
Tsarenko N A
4
,
Ognevskaya N V
4
,
Seregina O N
4
,
Rachenok I G
4
,
Shchetinin Igor
5
,
Ponkratov K V
6
3
4
JSC Design & Survey and Research & Development Institute of Industrial Technology, Moscow, 115409, Russia
|
6
Renishaw plc, Moscow 115477, Russia
|
Publication type: Journal Article
Publication date: 2022-07-01
Journal:
Journal of Alloys and Compounds
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 6.2
ISSN: 09258388
Materials Chemistry
Metals and Alloys
Mechanical Engineering
Mechanics of Materials
Abstract
The influence exerted by the specific type of the lanthanide cation and calcination temperature on the crystal and local structures of Ln 2 (WO 4 ) 3 tungstates ( Ln = La–Dy) prepared by a coprecipitation is studied using synchrotron X-ray diffraction, X-ray absorption fine structure (XAFS) spectroscopy, Fourier transform infrared (FT-IR) and Raman spectroscopies, photoluminescence, simultaneous thermal analysis, and inductively coupled plasma atomic emission spectroscopy. The combination of these experimental techniques enabled a structural insight into Ln tungstates at multiple characteristic scales, i.e. short-range of metal atom coordination (XAFS), medium-range of the network of chemical bonds (FT-IR and Raman spectroscopies), and long-range or 3D periodicity within crystallites (XRD). It is found that the onset of amorphous precursor crystallization is observed at 575–600 ∘ C/3 h and leads to the formation of Ln 2 (WO 4 ) 3 nanocrystalline powders with a monoclinic (sp. gr. C 12/ c 1 (15)) structure. An increase in the calcination temperature leads to the growth of crystallite size and a decrease in microstrains. In the case of Dy 2 (WO 4 ) 3 an additional orthorhombic phase emerges (sp. gr. Pbcn (60)) at 1000 ∘ C. It is shown that the local structure of all well-crystallized compounds being studied contains lanthanide ions in the form of Ln 3+ and tungsten ions in the form of WO 4 2 − tetrahedra. The local structure in the monoclinic phase can be represented as a superposition of two non-equivalent tungstate tetrahedra: W(1)O 4 ( C 2 site symmetry) and W(2)O 4 ( C 1 site symmetry). The Ln O 8 polyhedra are strongly irregular, and the Ln 3+ cations occupy low-symmetry sites. • Formation and evolution of the crystal and local structure in Ln 2 (WO 4 ) 3 were studied. • A combination of s-XRD, XAFS, Raman and IR, PL, STA, ICP-AES methods were used. • The ordering of both cationic and anionic sublattices in the Ln 2 (WO 4 ) 3 was observed. • The local structure of all Ln tungstates contains Ln 3 + cations and WO 4 2- tetrahedra. • The Ln 3 + cations are located in sites with low point group symmetry (distorted LnO 8 ).
Citations by journals
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1
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Crystals
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Russian Journal of Inorganic Chemistry
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Multidisciplinary Digital Publishing Institute (MDPI)
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2 publications, 50%
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1 publication, 25%
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Elsevier
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Elsevier
1 publication, 25%
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1
2
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- We do not take into account publications that without a DOI.
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Popov V. V. et al. Multiscale study on the formation and evolution of the crystal and local structures in lanthanide tungstates Ln2(WO4)3 // Journal of Alloys and Compounds. 2022. Vol. 910. p. 164922.
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Popov V. V., Menushenkov A. P., Yastrebtsev A. A., Rudakov S., Ivanov A., Gaynanov B. R., Svetogorov R., Khramov E. V., Zubavichus Y. V., Molokova A. Yu., Tsarenko N. A., Ognevskaya N. V., Seregina O. N., Rachenok I. G., Shchetinin I., Ponkratov K. V. Multiscale study on the formation and evolution of the crystal and local structures in lanthanide tungstates Ln2(WO4)3 // Journal of Alloys and Compounds. 2022. Vol. 910. p. 164922.
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TY - JOUR
DO - 10.1016/j.jallcom.2022.164922
UR - https://doi.org/10.1016%2Fj.jallcom.2022.164922
TI - Multiscale study on the formation and evolution of the crystal and local structures in lanthanide tungstates Ln2(WO4)3
T2 - Journal of Alloys and Compounds
AU - Popov, Victor V
AU - Menushenkov, A. P.
AU - Yastrebtsev, A A
AU - Rudakov, S.G.
AU - Ivanov, A
AU - Gaynanov, Bulat R
AU - Svetogorov, Roman
AU - Khramov, Evgeny V.
AU - Zubavichus, Y V
AU - Molokova, A Yu
AU - Tsarenko, N A
AU - Ognevskaya, N V
AU - Seregina, O N
AU - Rachenok, I G
AU - Shchetinin, Igor
AU - Ponkratov, K V
PY - 2022
DA - 2022/07/01 00:00:00
PB - Elsevier
SP - 164922
VL - 910
SN - 0925-8388
ER -
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@article{2022_Popov,
author = {Victor V Popov and A. P. Menushenkov and A A Yastrebtsev and S.G. Rudakov and A Ivanov and Bulat R Gaynanov and Roman Svetogorov and Evgeny V. Khramov and Y V Zubavichus and A Yu Molokova and N A Tsarenko and N V Ognevskaya and O N Seregina and I G Rachenok and Igor Shchetinin and K V Ponkratov},
title = {Multiscale study on the formation and evolution of the crystal and local structures in lanthanide tungstates Ln2(WO4)3},
journal = {Journal of Alloys and Compounds},
year = {2022},
volume = {910},
publisher = {Elsevier},
month = {jul},
url = {https://doi.org/10.1016%2Fj.jallcom.2022.164922},
pages = {164922},
doi = {10.1016/j.jallcom.2022.164922}
}