| 摘要 |
PURPOSE: To provide such a dielectric ceramic composition as exhibits stable dielectric characteristics despite of calcining it under lower temperature than usual by mixing specific composition calcination powder of Ba-Sn-Ti-O systems. ZnO, etc., to specific composition calcination power of Ba-Mg-Ta-O system and calcining it. CONSTITUTION: Calcination powder of a formula III is mixed at the rate of 50mol. or less to calcination powder 100mol. of formula I or II, ZnO or MnCO3 is added at the rate of 5mol. or less to this calcination powder mixture 100mol., and after that it is calcined in the atmosphere or oxygen atmosphere under 1300 to 1650 deg.C so as to provide a target composition. This composition is a dielectric ceramic composition represented by a formula IV. In the formula, 0.20<=Z<=0.80; 0.00<x<=0.50; (y) represents mol. number of MnO and/or ZnO to 1mol. of the main component formula V. |
