
%0 Journal Article
%A Barbier, J 
%T Structural Refinement of Olivine-Type LiMgAsO<sub>4</sub>
%J Australian Journal of Chemistry
%D 1992/09/01
%V 45
%N 9
%P 1355-1362
%K 
%R https://doi.org/10.1071/CH9921355
%U https://www.publish.csiro.au/paper/CH9921355 
%X The refinement of the LiMgAsO4 structure by powder neutron diffraction confirms that it is isostructural with olivine. The structure is orthorhombic, Pnma space group, with a = 10.4183(15), b = 5.9660(8), c = 4.8692(5) Å, and Z = 4. The lithium and magnesium atoms are fully ordered on the octahedral sites with average bond lengths (Li-O) = 2.187, (Mg-O) = 2.108 and (As-O) = 1.672 A. LiMgAsO4 is isostructural with LiMgPO4 but not with LiMgVO4. However, a close structural relationship exists between the arsenate and the vanadate involving similar cation arrays but different anion arrays. 
