Ceramic dielectric composition and multilayer ceramic capacitor containing the same

摘要

A ceramic dielectric composition contains a base material powder represented by one or more of (Ca1−xSrx)(Zr1−yTiy)O3, Ca(Zr1−yTiy)O3, Sr(Zr1−yTiy)O3, (Ca1−xSrx)ZrO3, and (Ca1−xSrx)TiO3, in which x and y satisfy 0≦x≦1.0 and 0.2≦y≦0.9, respectively. The ceramic dielectric composition may have high room-temperature permittivity and excellent ESD protection characteristics and may secure withstand voltage characteristics while implementing relatively high capacitance.

主权项

1. A ceramic dielectric composition comprising:
a base material powder represented by one or more of (Ca1−xSrx)(Zr1−yTiy)O3, Ca(Zr1−yTiy)O3, Sr(Zr1−yTiy)O3, (Ca1−xSrx)ZrO3, and (Ca1−xSrx)TiO3, in which x and y satisfy 0≦x≦1.0 and 0.2≦y≦0.9, respectively; 0.1 at % to 1.0 at % of a second accessory ingredient, an oxide or carbonate containing at least one of magnesium (Mg) and aluminum (Al), based on 100 at % of the base material powder; a third accessory ingredient, an oxide or carbonate containing at least one of cerium (Ce), niobium (Nb), lanthanum (La), and antimony (Sb); and a fourth accessory ingredient, different from the second accessory ingredient, an oxide or carbonate containing at least one of silicon (Si), barium (Ba), calcium (Ca), and aluminum (Al), or a glass compound containing silicon (Si).