Low Dielectric Constant B_2O_3-P_2O_5-SiO_2 Ceramics Derived from Mixed-Solid Process

A novel B2O3-P2O5-SiO2 ceramic was synthesized by the conventional mixed-solid method using PbF2 as a low melting point additive. The low dielectric ceramic can be sintered below 900℃ in air. The typical dielectric properties of the sintered ceramics derived from the mixed-solid method show as: dielectric constants below 5, and dielectric loss less than 3×10-3 at the frequency of 1MHz. The ceramics are potential for using as dielectric material in super high frequency multi-layer chip inductors.