Measuring the relative permittivity of polyetherimide/(Ba0.8Sr0.2)(Ti0.9Zr0.1)O3 composites from 10 kHz to 12 GHz

Cheng-Fu Yang; Chia-Ching Wu; Ying-Chung Chen; Chean-Cheng Su
February 2009
Applied Physics Letters;2/2/2009, Vol. 94 Issue 5, pN.PAG
Academic Journal
The relative permittivity of polyetherimide-(Ba0.8Sr0.2)(Ti0.9Zr0.1)O3 (PEI-BSTZ) composites is measured from 10 kHz to 1 MHz using plate method. As the content of BSTZ filler is less than 18 vol %, the experimental values are fitted to the values predicted by Lichtenecker equation. As the content is more than 18 vol %, the measured relative permittivity of PEI-BSTZ composites is higher than the predicted values. The relative permittivity of PEI-BSTZ composites is measured at 1–12 GHz using “square cavity resonator” method. Measured at gigahertz, the relative permittivity of PEI-BSTZ composites is almost unchanged.


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