A precursor solution for the preparation of a ceramic of the BZT-αBXT type, where X is selected from Ca, Sn, Mn, and Nb, and α is a molar fraction selected in the range between 0.10 and 0.90, said solution consisting of: 1) at least one barium precursor compound; 2) at least one precursor compound selected from the group consisting of a calcium precursor compound, a tin precursor compound, a manganese precursor compound, and a niobium precursor compound; 3) at least one anhydrous precursor compound of zirconium; 4) at least one anhydrous precursor compound of titanium; 5) a solvent selected from the group consisting of propylene glycol, ethylene glycol, and 1,3-propanediol and optionally a secondary solvent selected from ethanol, 1-butanol, 1-propanol, 2-propanol, 2-butanol, isobutyl alcohol, 1-pentanol, 2-pentanol, 2-methyl-2-pentanol, acetic acid, n-butyric acid, x-methyl butyric acid, i-valeric acid, 2-ethyl butyric acid, 2,2-dimethyl butyric acid, 3,3-dimethyl butyric acid, 2,3-dimethyl butyric acid, 3-methylpentanoic acid, 4-methylpentanoic acid, 2-ethylpentanoic acid, 3-ethylpentanoic acid, 2,2-dimethylpentanoic acid, 3,3-dimethylpentanoic acid, 2,3-dimethylpentanoic acid, 2-ethylhexanoic acid, 3-ethylhexanoic acid, ethyl acetate, propyl acetate, n-butyl acetate, sec-butyl acetate, ter-butyl acetate, isobutyl acetate, n-amyl acetate, sec-amyl acetate, ter-amyl acetate, isoamyl acetate, acetone, methylethylketone, dimethyl ether, diethyl ether; and 6) a chelating agent and 7) optionally, a viscosizing agent selected from the group consisting of polyvinylpyrrolidone and polyethylene glycol, wherein said precursor compounds of calcium, barium, zirconium, titanium, tin, niobium, and manganese are selected from the group consisting of metal alkoxides, metal-diol complexes, metal-thiol complexes, metal carboxylates, metal-3-diketonate complexes, metal-3-diketoester complexes, metal-3-iminoketo complexes, metal-amine complexes. 1) at least one barium precursor compound; 2) at least one precursor compound selected from the group consisting of a calcium precursor compound, a tin precursor compound, a manganese precursor compound, and a niobium precursor compound; 3) at least one anhydrous precursor compound of zirconium; 4) at least one anhydrous precursor compound of titanium; 5) a solvent selected from the group consisting of propylene glycol, ethylene glycol, and 1,3-propanediol and optionally a secondary solvent selected from ethanol, 1-butanol, 1-propanol, 2-propanol, 2-butanol, isobutyl alcohol, 1-pentanol, 2-pentanol, 2-methyl-2-pentanol, acetic acid, n-butyric acid, x-methyl butyric acid, i-valeric acid, 2-ethyl butyric acid, 2,2-dimethyl butyric acid, 3,3-dimethyl butyric acid, 2,3-dimethyl butyric acid, 3-methylpentanoic acid, 4-methylpentanoic acid, 2-ethylpentanoic acid, 3-ethylpentanoic acid, 2,2-dimethylpentanoic acid, 3,3-dimethylpentanoic acid, 2,3-dimethylpentanoic acid, 2-ethylhexanoic acid, 3-ethylhexanoic acid, ethyl acetate, propyl acetate, n-butyl acetate, sec-butyl acetate, ter-butyl acetate, isobutyl acetate, n-amyl acetate, sec-amyl acetate, ter-amyl acetate, isoamyl acetate, acetone, methylethylketone, dimethyl ether, diethyl ether; and 6) a chelating agent and 7) optionally, a viscosizing agent selected from the group consisting of polyvinylpyrrolidone and polyethylene glycol,