Answers are grounded in this paper and cite their sources.
Al can be doped into the oxide ion conductor La9.33(SiO4)6O2 according to the formula La9.33 + x/3(SiO4)6 − x(AlO4)xO2 where 0 ≤ x ≤ 2; a conductivity enhancement of 1–2 orders of magnitude is observed for intermediate x values and illustrates the important role that La vacancies have in optimising the conductivity.
No takes yet. Share an insight, caveat, or question.
Sinclair et al. (2001) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: