High temperature piezoelectric materials for actuators and sensors

Shujun Zhang; Edward Alberta; Richard E. Eitel; Paul W. Rehrig; Wesley Hackenberger; Clive A. Randall; Thomas R. Shrout

doi:10.1117/12.599102

16 May 2005 High temperature piezoelectric materials for actuators and sensors

Shujun Zhang, Edward Alberta, Richard E. Eitel, Paul W. Rehrig, Wesley Hackenberger, Clive A. Randall, Thomas R. Shrout

Proceedings Volume 5761, Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics; (2005) https://doi.org/10.1117/12.599102
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2005, San Diego, California, United States

Abstract

(1-x)BiScO_3-xPbTiO₃ (BSPT) polycrystalline material with a morphotropic phase boundary (MPB) composition (x=0.64) exhibits a high Curie temperature (T_C) about 450°C and good piezoelectric properties with d₃₃ values around 460pC/N. Manganese (Mn) modified BSPT was utilized in order to increase the electric resistivity and RC time constant. At 450°C, BSPT66-Mn ceramic exhibited a resistivity of 3x10⁷ Ohm.cm and RC value of 0.08s, respectively, significantly higher than the values for undoped BSPT and commercial PZT5 materials. The manganese additive shifts T_C of BSPT materials to lower temperatures, which were found to be 442°C and 462°C for modified BSPT64 and BSPT66, respectively. The piezoelectric behavior for the modified BSPT material was found to deteriorate slightly owing to the hardening effect of manganese, but showed superior temperature stability and enhanced resistivity. The detailed temperature dependent properties were studied in this work and compared to commercial PZT5 materials. The complete set of materials constants, including the elastic s_ij, c_ij, piezoelectric d_ij, e_ij, g_ij, h_ij, dielectric and electromechanical k_ij values were determined using resonance technique and derived from the experimental data.

Citation Download Citation

Shujun Zhang, Edward Alberta, Richard E. Eitel, Paul W. Rehrig, Wesley Hackenberger, Clive A. Randall, and Thomas R. Shrout "High temperature piezoelectric materials for actuators and sensors", Proc. SPIE 5761, Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics, (16 May 2005); https://doi.org/10.1117/12.599102

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