Issue 1, 1991
From the journal:

Journal of Materials Chemistry

Crystal chemistry of lithium gallium silicate, Li4 – 3xGaxSiO4, solid electrolytes

Ronald I. Smith  and  Anthony R. West  

Abstract

The crystal structure of the lithium ion conductor α-Li3.00Ga0.33SiO4 has been determined from Rietveld refinement of time-of-flight high-resolution powder neutron diffraction data. It is orthorhombic, with space group C2221, and has an oxygen arrangement that is a distortion of primitive tetragonal packing. Si, Ga and Li atoms occupy tetrahedral and octahedral sites within this oxygen framework. Li and Ga sites are fractionally occupied but certain pairs of face-sharing sites have combined occupancies of unity. The relationship between this structure and those of rutile, Li4SiO4, Li3.4Ga0.2SiO4, Li5GaSi2O8 and γ-LiAlO2 is discussed. The nature of the Li4SiO4(s.s.)–α(s.s.) phase transition is also discussed.

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Article information

DOI
https://doi.org/10.1039/JM9910100091
Article type
Paper

J. Mater. Chem., 1991,1, 91-96

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Crystal chemistry of lithium gallium silicate, Li4 – 3xGaxSiO4, solid electrolytes

R. I. Smith and A. R. West, J. Mater. Chem., 1991, 1, 91 DOI: 10.1039/JM9910100091

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