| 摘要 |
PURPOSE:To increase dielectric constant at room temp. and to minimize the change in the dielectric constant and the reduction rate of dielectric constant at the time of D.C bias impression by substituting Sr ions for specific amounts of lead ions in a lead type three component system porcelain composition having specific composition. CONSTITUTION:This composition is composed principally of a three component composition consisting of magnesium.lead niobate, nickel.lead niobate, and lead titanate and in a ternary composition diagram showing compositional ranges, the above-mentioned three-component composition lies on the lines connecting (x=0.1, y=0.7, z=0.2), (x=0.1, y=0.475, z=0.425), (x=0.625, y=0.05, z=0.325), (x=0.75, y=0.05, z=0.2), (x=0.75, y=0.15, z=0.1), (x=0.5, y=0.4, z=0.1), and (x=0.15, y=0.7, z=0.15) and within the range enclosed with the lines connecting these seven points the principal component is produced. At this time, the composition is produced by substituting the strontium ions for the lead ions in the composition for by 0.01-30 mole %. |
