Dielectric ceramic compound

摘要

This invention provides a dielectric ceramic compound for microwave use which has a high dielectric constant and a high Q value, and which also has a small temperature coefficient of a resonant frequency. The dielectric ceramic compound comprising a compound represented by Formula 1 at least includes calcium oxide, magnesium oxide, zinc oxide, niobium oxide, tantalum oxide, and titanium oxide, (Formula 1) Ca[{(Mg1-xZnx)1/3(Nb1-zTaz)2/3}1-yTiy]O3 wherein x and y are present within an area formed by the following apexes A, B, C, and D, excluding an area on straight line AB, A: (x, y)=(0.0, 0.0) B: (x, y)=(0.0, 0.5) C: (x, y)=(1.0, 0.55) D: (x, y)=(1.0, 0.0) and z is present in the range of 0.0