is sr then preferably 0 06 u2266 y u2266 0 2 and with a third proviso that when m u2032 is ca then preferably 0 005 u2266 y u2266 0 1 and with a fourth proviso that when m u2032 is mg then y 0 005 to 0 1 preferably 0 005 to 0 05 and with a fifth proviso that y may be zero when m u2033 is mn also may be used the dielectric materials may be prepared from precursor solutions thereof stoichiometric batio 3 is prepared by forming a blend of a ba precursor solution and a ti precursor solution ba precursor solutions may be prepared by dissolving barium acetate in glacial acetic acid to produce a blend the blend is stirred at elevated temperature preferably about 90 u00b0 c to form a ba precursor solution the molarity of the solution is about 0 5 to about 1 5 m i preferably about 0 85 m barium acetate per liter ti precursor solution may be formed by mixing a ti isopropoxide with acetyl acetone the molarity of this solution is about 1 to 10 m i preferably about 5 m ti isopropoxide per liter acetyl acetone the ti precursor solution may be combined with the ba precursor solution to produce a batio 3 precursor solution that has a ba ti of about 1 00 the batio 3 precursor solution is stirred at elevated temperature such as for 1 hr at 90 u00b0 c the batio 3 precursor.