The temperature dependent dielectric constants in the vicinity of room temperature have been measured for bulk ceramics which are phase-mixtures of Pb2(Nb,Mg,Ti)2O6+x pyrochlores and Pb(Nb,Mg,Ti)O3 perovskites. A band of compositions is found in which the negative temperature coefficient of dielectric constant for the pyrochlore is very closely compensated by the positive temperature coefficient of dielectric constant of the perovskite. These compositions have dielectric constants near 200, with measured Q's near 200 at 100 kHz.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)