Colloidal solutions of ferroelectrics (KTiOPO4) or ionic conductors (L
iTi2(PO4)3) materials have been synthetized. These solutions have been
used for thin film synthesis. They are obtained by polycondensation r
eactions between phosphoric acid esters PO(OH)3-x(OR)x (with 0 < x < 3
and R = Et, (n)Bu, ...) and titanium alkoxides. The ratio POH/Ti and
the amount of hydrolysis are the parameters which control the condensa
tion.