Vol. 107, Issue 8, August 2009, pp. 52-63

Problem of Piezoelectric Sensitivity of 1–3-type Composites

¹Vitaly Yu. TOPOLOV and ²Anatoly E. PANICH

¹ Department of Physics, Southern Federal University, 5 Zorge street, 344090 Rostov-on-Don, Russia

Tel.: +007-(863)-2975127, fax +007-(863)-2975120

² Department of High Technologies and Innovations, Southern Federal University,
10 Milchakov street, 344090 Rostov-on-Don, Russia

Tel.: +007-(863)-2223401, fax: +007-(863)-2434844

E-mail: vutoplov@sfedu.ru, piezo@sfedu.ru

Received: 11 June 2009   /Accepted:  15 August 2009   /Published:  25 August 2009

Abstract: A new structure of the anisotropic high-sensitive 1–3-type piezo-active composite is put forward. Effective piezoelectric coefficients d^*₃₃ and g^*₃₃, squared figure of merit d^*₃₃ g^*₃₃ and related hydrostatic parameters d^*_k, g^*_k and d^*_k g^*_k are studied within the framework of the proposed model of the ferroelectric ceramic / porous polymer composite with 1–3–0 connectivity. Effects of porosity, microgeometry of pores and their orientation on the aforementioned piezoelectric coefficients and figures of merit of the 1–3–0 composite are studied to show its piezoelectric performance and high piezoelectric sensitivity. A comparison of the effective parameters to those known for the related 1–3-type composites based on ferroelectric ceramics is carried out, and some advantages concerning high piezoelectric sensitivity of the studied 1–3–0 composite are emphasized.

Keywords: Piezo-active Composite, Piezoelectric sensitivity, Piezoelectric coefficients, Figures of Merit

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