Molten Salt Flux Synthesis of Two New Alkali Rare Earth Silicate Fluorides: Rb₃ Sc₂ [Si₄O₁₂ ]F and Rb₂ Sm[Si₄O₁₀ ]F

Author(s)

Hunter B. Tisdale, University of South CarolinaFollow
Hans Conrad zur Loye, University of South CarolinaFollow

Document Type

Article

Abstract

Two new alkali rare earth silicate fluorides have been synthesized as single crystals in a molten eutectic flux, RbCl/HRbF₂. Rb₃Sc₂[Si₄O₁₂]F crystallizes in a novel structure type with the orthorhombic, noncentrosymmetric space group Pna2₁ and lattice parameters a = 18.5645(13) Å, b = 6.7591(4) Å, and c = 10.4217(7) Å. Rb2Sm[Si4O10]F forms as a distortion of the known A2Ln[Si4O10]F structure, crystallizing in the monoclinic space group P21/m, with lattice parameters a = 8.0886(2) Å, b = 8.8000(3) Å, c = 8.2285(3) Å, and β = 90.2350(10)°. The syntheses and structures of these two compositions are discussed as well as the optical behavior of the Eu-doped Rb₃[Sc_1.9Eu_0.1][Si₄O₁₂]F.

Digital Object Identifier (DOI)

https://doi.org/10.1016/j.solidstatesciences.2024.107802

Publication Info

Published in Solid State Sciences, Volume 160, 2025.

Rights

© 2024 Elsevier Masson SAS. All rights are reserved, including those for text and data mining, AI training, and similar technologies.

APA Citation

zur Loye (2025). Molten Salt Flux Synthesis of Two New Alkali Rare Earth Silicate Fluorides: Rb₃ Sc₂ [Si₄O₁₂ ]F and Rb₂ Sm[Si₄O₁₀ ]F. Solid State Sciences, 160. https://doi.org/10.1016/j.solidstatesciences.2024.107802