Abstract
New orthophosphates of potassium, zirconium, and rare earth elements K2 LnZr(PO4)3 (Ln = Ce-Yb, Y) that crystallize in a langbeinite structure (cubic system, sp. gr. P213, Z = 4) were prepared and investigated by X-ray diffraction and IR spectroscopy. The structure of the K2PrZr(PO4)3 phosphate was refined by the Rietveld method using neutron powder diffraction data (DN-2 time-of-flight diffractometer, Joint Institute for Nuclear Research, Dubna). This structure is characterized by a mixed framework [PrZr(PO4)3] with large cavities in which potassium cations are located. Pr3+ and Zr4+ cations are distributed in order over two independent crystallographic positions. The limits of the incorporation of lanthanide cations into the anionic framework in phosphates with sodium-zirconium phosphate and langbeinite structures are considered.
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References
A. A. Voronov, V. V. Ilyukhin, and N. V. Belov, Kristallografiya 20(3), 556 (1975) [Sov. Phys. Crystallogr. 20, 340 (1975)].
H. Wulff, U. Guth, and B. Loescher, Powder Diffr. 7, 103 (1992).
E. R. Losilla, S. Bruque, M. A. G. Aranda, et al., Solid State Ionics 112, 53 (1998).
R. Masse, A. Durif, J. C. Guitel, and I. Tordjman, Bull. Soc. Fr. Mineral. Crystallogr. 95, 47 (1972).
A. Leclaire, A. Benmoussa, M. M. Borel, et al., J. Solid State Chem. 78, 227 (1989).
E. S. Lunezheva, B. A. Maksimov, O. K. Mel’nikov, and L. A. Muradyan, Kristallografiya 34(3), 611 (1989) [Sov. Phys. Crystallogr. 34, 363 (1989)].
J. Isasi and A. Daidouh, Solid State Ionics 133, 303 (2000).
P. D. Battle, A. K. Cheetham, W. T. A. Harrison, and G. J. Long, J. Solid State Chem. 62, 16 (1986).
P. D. Battle, T. C. Gibb, S. Nixon, and W. T. A. Harrison, J. Solid State Chem. 75, 21 (1988).
Y. Miyajima, T. Miyoshi, J. Tamaki, et al., Solid State Ionics 124, 201 (1999).
V. B. Zlokazov and V. V. Chernyshev, J. Appl. Crystallogr. 25, 447 (1992).
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Translated from Kristallografiya, Vol. 49, No. 4, 2004, pp. 692–696.
Original Russian Text Copyright © 2004 by Trubach, Beskrovny\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\), A. Orlova, V. Orlova, Kurazhkovskaya.
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Trubach, I.G., Beskrovnyi, A.I., Orlova, A.I. et al. Synthesis and investigation of the new phosphates K2 LnZr(PO4)3 (Ln = Ce-Yb, Y) with langbeinite Structure. Crystallogr. Rep. 49, 614–618 (2004). https://doi.org/10.1134/1.1780625
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DOI: https://doi.org/10.1134/1.1780625