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Polymeric citrate precursor route to the synthesis of the high dielectric constant oxide, CaCu3Ti4O12
Using citric acid and ethylene glycol, a polymeric precursor of the above compound was obtained at low temperatures (135 °C) which on subsequent heat treatments led to pure CaCu3Ti4O12 at 1000 °C. On sintering further at ...
Synthesis and microwave dielectric properties of Sr3Zn1−xMgxNb2O9 phases
Oxides of the type, Sr3Zn1−xMgxNb2O9 (0≤x≤1) have been obtained by the ceramic method. These oxides crystallize in the hexagonal cell corresponding to ordered triple perovskites. Sintered disks show nearly frequency-independent ...
New double perovskites having low dielectric loss:LaBaZnTaO6, LaSrZnNbO6, and Ba2Zn0.5Ti0.5TaO6
Oxides of the type LaBaZnTaO6 and LaSrZnNbO6 have been synthesized by the solid-state method at 1100°C. Ba2Zn0.5Ti0.5TaO6 was synthesized by the molten salt method (using NaCl–KCl as flux), the solid-state method yielding ...
Synthesis and dielectric properties of magnesium niobate -magnesium tantalate solid solutions
Monophasic Oxides of the type MgNb2−xTaxO6 (0 ≤ x ≤ 2) have been synthesized by solid-state reactions using Mg(NO3)2·6H2O as the source of Mg. The oxides crystallize in the orthorhombic columbite structure till X = 1.75 ...