Temperature-stable ferroelectric ceramics for surface wave devices

1 January 1976

journal article
Published by Taylor & Francis in Ferroelectrics

Vol. 10 (1) , 135-138
https://doi.org/10.1080/00150197608241964

Abstract

Ferroelectric ceramics with a low-temperature coefficient of the delay time, in Rayleigh waves, were made by compositions of 0.52 PbTiO₂-0.46 PbZrO₃-0.02 Pb(Cd_1/2W_1/2)O₃ with 0.8 weight percent of MnO₂. In such compositions, a magnitude of+13 ppm/deg was obtained as the surface wave propagation delay time temperature coefficient. Surface wave propagation losses were evaluated as 6 dB/cm and 14 dB/cm at frequencies of 30 and 60 MHz, respectively. The ferroelectric ceramics obtained are suitable for surface wave devices, such as TV-IF filters.

Keywords

SURFACE WAVE
TEMPERATURE STABLE
STABLE FERROELECTRIC
FERROELECTRIC CERAMICS
WAVE DEVICES

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