Abstract
Ca0.5(1 + x)Zr2–xFe x (PO4)3 phosphates have been synthesized by a sol–gel process. The individual compounds and solid solutions obtained crystallize in the NaZr2(PO4)3 structure (trigonal symmetry, sp. gr. R\(\bar 3\)). Using high-temperature X-ray diffraction, we have determined their thermal expansion parameters in the temperature range from 25 to 800°C. With increasing x, the magnitudes of their linear thermal expansion coefficients and thermal expansion anisotropy decrease. Most of the synthesized phosphates can be rated as low-thermal-expansion compounds and can be regarded as materials capable of withstanding thermal “stress.”
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Original Russian Text © D.O. Savinykh, S.A. Khainakov, A.I. Orlova, S. Garcia-Granda, 2018, published in Neorganicheskie Materialy, 2018, Vol. 54, No. 6, pp. 622–627.
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Savinykh, D.O., Khainakov, S.A., Orlova, A.I. et al. Preparation and Thermal Expansion of Calcium Iron Zirconium Phosphates with the NaZr2(PO4)3 Structure. Inorg Mater 54, 591–595 (2018). https://doi.org/10.1134/S0020168518060122
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DOI: https://doi.org/10.1134/S0020168518060122