Journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 96, Issue 4, Pages 1209-1213Publisher
WILEY-BLACKWELL
DOI: 10.1111/jace.12184
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- AFSRO [FA8650-09-C-5002]
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The Ca(Zr1xTix)O3 (CZT) solid solution system is a linear dielectric that is of interest for high-temperature power capacitor applications. This dielectric was synthesized by conventional solid-state processes and prototyped into single-layer CZT capacitors, which were fabricated with interdigitated electrodes cofired between dielectric layers similar to 10-m thick. The dielectric properties of these capacitors were extensively investigated as a function of Zr/Ti ratio on the CaZrO3 side of the solid solution. The electrostatic energy density and breakdown strength of the CZT capacitors were investigated by measuring polarizationelectric field curves as a function of temperature from room temperature to 250 degrees C. The Ca(Zr0.80Ti0.20)O3 capacitors show high electrostatic energy density of 4J/cm3 at 250 degrees C. Highly accelerated life testing (HALT) was also performed on these dielectrics, and we quantified the thermal stimulated depolarization current (TSDC) to access the major point defects in the CZT system.
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