Effect of Polymer-Ceramic Fibre Interphase Design on Coupling Factor in Low Fibre Volume Content Piezoelectric Composites

Table 1

(a) The small signal dielectric and piezoelectric data and (b) the large signal ferroelectric data of the coated and uncoated PZT fibres.

	(a)			(b)
	d33 (pC/N)	tanδ (%)	ε^T33	Ec (kV/mm)	S (%)	Pr+ (µC/cm^2)	Pr− (µC/cm^2)
Uncoated fibres	250 ± 9	10 ± 2	1315 ± 163	1.26 ± 0.07	0.24 ± 0.03	31 ± 2.0	-31 ± 2.0
Coated fibres	239 ± 16	11 ± 7	1359 ± 221	1.24 ± 0.04	0.27 ± 0.04	29 ± 1.0	-30 ± 0.6