Abstract
The crystal structure of the high-temperature hexagonal modification of a rare-earth titanate, namely, Gd1.8Lu0.2TiO5, is determined using the single-crystal X-ray diffraction technique [a = 3.663(3) Å,c = 11.98(1) Å, space group P63/mmc, Z = 1.2, 139 F(h, k, l),R = 0.057]. The structure is characterized by the closest six-layer packing of oxygen atoms [ABABAB] in which octahedral holes are occupied by gadolinium atoms and the second cation position is located at a face shared by two adjacent tetrahedral holes. This trigonal bipyramid is also occupied by titanium and lutetium atoms, as well as by the gadolinium atoms not involved in the octahedral position.
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REFERENCES
Petrova, M.A., Novikova, A.S., Romanov, D.P., and Grebenshchikov, R.G., Solid Solutions in the Ln2TiO5-Lu2TiO5 (Ln = Gd, Tb, Er) Systems, Izv. Akad. Nauk SSSR, Neorg. Mater., 1986, vol. 22, no. 7, pp. 1225–1227.
Guillen, M. and Bertaut, E.F., Determination de la structure de La2TiO5 aux X et aux neutrons, C.R. Acad. Sci., Ser. B, 1966, vol. 262, pp. 962–965.
Mueller-Buschbaum, Hk. and Scheunemann, K., Zur Kenntnus von Nd2TiO5, J. Inorg. Nucl. Chem., 1973, vol. 35, pp. 1091–1098.
Petrova, M.A., Novikova, A.S., Romanov, D.P., and Grebenshchikov, R.G., Polymorphism of Ln2TiO5 Rare-Earth Titanates, Izv. Akad. Nauk SSSR, Neorg. Mater., 1982, vol. 18, no. 2, pp. 287–291.
German, M. and Kovba, L.M., Structural Model of the β Modification of Rare-Earth Orthotitanates, Zh. Neorg. Khim., 1984, vol.29, no. 12, pp. 3024–3026.
Andrianov, V.I., Refinement of Crystal Structures with the AREN Software Package, Kristallografiya, 1989, vol. 34, no. 6, pp. 1387–1391.
Busing, W.R., Martin, K.O., and Levy, H.A., Program for LSQ-Refinement of Crystal Structures: Report ORNL-TM-305, Tennessee: Oak Ridge National Laboratory, 1962.
Bertaut, F. and Mareschal, J., Un nouveau type de structure hexagonale: AlTO3 (T = Y, Eu, Gd, Tb, Dy, Ho, Er), C. R. Acad. Sci., 1963, vol. 257, pp. 867–870.
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Shepelev, Y.F., Petrova, M.A. & Novikova, A.S. Crystal Structure of the Hexagonal Modification of Lutetium-Stabilized Gadolinium Titanate Gd1.8Lu0.2TiO5 . Glass Physics and Chemistry 30, 342–344 (2004). https://doi.org/10.1023/B:GPAC.0000038707.79995.d9
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DOI: https://doi.org/10.1023/B:GPAC.0000038707.79995.d9