Caractérisation de la solution solide In _{1 x}Li _{3 x}VO _{4} (0 < x ≤ 0,4) dans le système InVO _{4}Li _{3}VO _{4} et examen des systèmes CrVO _{4}Li _{3}VO _{4} et InVO _{4}CrVO _{4}
Abstract
In the InVO _{4}Li _{3}VO _{4} system, a continuous solid solution In _{1 x}Li ^{(6)}_{a}□ ^{(6)}_{b}Li ^{(4)}_{c}□ ^{(6)}_{d}VO _{4} exists between InVO _{4} and In _{0.6}Li _{1.2}VO _{4}, with a + b = x, c + d = 1, and a + c = 3 x. The solid solution is of two types: in the first, 0 < x ≤ 0.33, a = 0, interstitial Li ^{+} ions are in the vacant tetrahedral sites of InVO _{4}; in the second, 0.33 < x ≤ 0.4, c = 1, Li ^{+} ions are also in the octahedral sites vacated by In ^{3+}. The ionic conductivity measured for some compositions is weak, 10 ^{7} (Ω cm) ^{1} at 493 K. Solid solution has not been found between CrVO _{4} and Li _{3}VO _{4}, although CrVO _{4} is isostructural with InVO _{4}. Mutual solid solution between CrVO _{4} and InVO _{4} is extremely limited. Yellow and weakly hygroscopic monocrystals have been synthetized for R_{2}Li _{3}(VO _{4}) _{3} compositions ( R = In,Cr,Fe); their chemical formula can be symbolized by LiVO _{3}: R^{3+}. The R^{3+} percentage was too low to be detected by analysis of electronic densities based on Xray diffraction intensities.
 Publication:

Journal of Solid State Chemistry France
 Pub Date:
 December 1986
 DOI:
 10.1016/00224596(86)901003
 Bibcode:
 1986JSSCh..65..287T