Na 2/7 Gd 4/7 MoO 4 : A modulated scheelite-type structure and conductivity properties
A. V. Arakcheeva
2, 3
,
B. Redkin
4
,
Vitaly V. Sinitsyn
4
,
S. Khasanov
4
,
E. Kudrenko
4
,
M Raskina
1
,
Oleg Lebedev
5
,
G. Van Tendeloo
6
3
Phase Solutions Ltd., CH-1012 Lausanne,
Switzerland
|
5
Laboratoire CRISMAT, UMR 6508 CNRS ENSICAEN, 6bd Maréchal Juin, 14050
Caen, France
|
Publication type: Journal Article
Publication date: 2012-04-19
scimago Q1
wos Q1
SJR: 0.958
CiteScore: 7.4
Impact factor: 4.7
ISSN: 00201669, 1520510X
PubMed ID:
22515515
Inorganic Chemistry
Physical and Theoretical Chemistry
Abstract
Scheelite-type compounds with the general formula (A1,A2)(n)[(B1,B2)O(4)](m) (2/3 ≤ n/m ≤ 3/2) are the subject of large interest owing to their stability, relatively simple preparation, and optical properties. The creation of cation vacancies (□) in the scheelite-type framework and the ordering of A cations and vacancies can be a new factor in controlling the scheelite-type structure and properties. For a long time, cation-deficient Nd(3+):M(2/7)Gd(4/7)□(1/7)MoO(4) (M = Li, Na) compounds were considered as potential lasers with diode pumping. They have a defect scheelite-type 3D structure (space group I4(1)/a) with a random distribution of Li(+)(Na(+)), Gd(3+), and vacancies in the crystal. A Na(2/7)Gd(4/7)MoO(4) single crystal with scheelite-type structure has been grown by the Czochralski method. Transmission electron microscopy revealed that Na(2/7)Gd(4/7)MoO(4) has a (3 + 2)D incommensurately modulated structure. The (3 + 2)D incommensurately modulated scheelite-type cation-deficient structure of Na(2/7)Gd(4/7)MoO(4) [super space group I4 (α-β0,βα0)00] has been solved from single-crystal diffraction data. The solution of the (3 + 2)D incommensurately modulated structure revealed the partially disordered distribution of vacancies and Na and Gd cations. High-temperature conductivity measurements performed along the [100] and [001] orientation of the single crystal revealed that the conductivity of Na(2/7)Gd(4/7)MoO(4) at T = 973 K equals σ = 1.13 × 10(-5) Ω(-1) cm(-1).
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Morozov V. A. et al. Na 2/7Gd 4/7MoO 4: A modulated scheelite-type structure and conductivity properties // Inorganic Chemistry. 2012. Vol. 51. No. 9. pp. 5313-5324.
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Morozov V. A., Arakcheeva A. V., Redkin B., Sinitsyn V. V., Khasanov S., Kudrenko E., Raskina M., Lebedev O., Van Tendeloo G. Na 2/7Gd 4/7MoO 4: A modulated scheelite-type structure and conductivity properties // Inorganic Chemistry. 2012. Vol. 51. No. 9. pp. 5313-5324.
Cite this
RIS
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TY - JOUR
DO - 10.1021/ic300221m
UR - https://doi.org/10.1021/ic300221m
TI - Na 2/7Gd 4/7MoO 4: A modulated scheelite-type structure and conductivity properties
T2 - Inorganic Chemistry
AU - Morozov, Vladimir Alexei
AU - Arakcheeva, A. V.
AU - Redkin, B.
AU - Sinitsyn, Vitaly V.
AU - Khasanov, S.
AU - Kudrenko, E.
AU - Raskina, M
AU - Lebedev, Oleg
AU - Van Tendeloo, G.
PY - 2012
DA - 2012/04/19
PB - American Chemical Society (ACS)
SP - 5313-5324
IS - 9
VL - 51
PMID - 22515515
SN - 0020-1669
SN - 1520-510X
ER -
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BibTex (up to 50 authors)
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@article{2012_Morozov,
author = {Vladimir Alexei Morozov and A. V. Arakcheeva and B. Redkin and Vitaly V. Sinitsyn and S. Khasanov and E. Kudrenko and M Raskina and Oleg Lebedev and G. Van Tendeloo},
title = {Na 2/7Gd 4/7MoO 4: A modulated scheelite-type structure and conductivity properties},
journal = {Inorganic Chemistry},
year = {2012},
volume = {51},
publisher = {American Chemical Society (ACS)},
month = {apr},
url = {https://doi.org/10.1021/ic300221m},
number = {9},
pages = {5313--5324},
doi = {10.1021/ic300221m}
}
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Morozov, Vladimir Alexei, et al. “Na 2/7Gd 4/7MoO 4: A modulated scheelite-type structure and conductivity properties.” Inorganic Chemistry, vol. 51, no. 9, Apr. 2012, pp. 5313-5324. https://doi.org/10.1021/ic300221m.