Patent ID: 7041615

Claim:
A method of manufacturing a ceramic multilayer element comprising the steps of manufacturing a multilayer stack comprising a first ceramic foil, a first electrode comprising Cu, a second ceramic foil, and a second electrode comprising Cu, which ceramic foils are manufactured from a dielectric composition comprising a ceramic composition and a glass composition comprising SiO 2 , which ceramic composition contains Ba a RE b Ti c O 3 , wherein RE represents a rare earth element, with 0.05≦a≦0.25, 0.525≦b≦0.70, 0.85≦c≦1.0, and 2a+3b+4c=6, the ceramic composition being free from lead and bismuth; and sintering the multilayer stack, wherein the method further comprises the step of forming the glass composition such that it contains a bivalent metal oxide chosen from the group consisting of MgO and ZnO and greater than 10% to about 25% weight with respect to the glass composition of TiO 2 , the method further comprises forming the dielectric composition such that it contains a metal oxide which is different from the bivalent metal oxide present in the glass composition, and the sintering step further comprises sintering the multilayer stack at a temperature of between 900 and 1070° C. and in an atmosphere which is non-oxidizing for Cu.