| 摘要 |
PURPOSE:To provide a dielectric porcelain composition which has a high dielectric constant, a large no-load Q, and causes little temperature variation at a resonant frequency by having a specific composition of Mg, Ca, Ti and O as main components, and containing BiVO4 and CuO in a specific proportion as auxiliary components. CONSTITUTION:This dielectric porcelain composition has main components represented by the formula (X is 0.03 to 0.14) consisting of magnesium, calcium, titanium and oxygen, and contains BiVO4 and CuO as auxiliary components, the content (a) (wt.%) of BiVO4 in the main components being not less than 5 and not greater than 15, the content (b) (wt.%) of CuO in the main components being not less than 0.5 and not greater than 5. The dielectric porcelain composition can be used in the fabrication of a dielectric resonator, a dielectric substrate, a layered element or the like by being machined into the appropriate shape and size as necessary or by being molded by doctor-blade method into sheets which are then laminated on electrodes. |
