Abstract
Li x Na1 – x NbO3 (x = 0.125, 0.17, 0.25) solid solutions are synthesized at high pressures (6 GPa) and temperatures (1100–1500°C), and their polymorphic transformations are studied by x-ray diffraction. The composition and temperature dependences of lattice parameters for the identified polymorphs are presented. The results demonstrate that the high-pressure solid solutions with x = 0.17 and 0.25 are supersaturated under ordinary conditions. Heating these solid solutions to above ≃800°C leads to precipitation of an LiNbO3-based phase.
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Radyush, Y.V., Olekhnovich, N.M., Vyshatko, N.P. et al. Structural Phase Transitions of High-Pressure Li x Na1 – x NbO3 Solid Solutions. Inorganic Materials 40, 971–975 (2004). https://doi.org/10.1023/B:INMA.0000041331.03980.7a
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DOI: https://doi.org/10.1023/B:INMA.0000041331.03980.7a