Title

Piezoelectric ceramics with high piezoelectricity and broad temperature usage range

Publication Name

Journal of Materiomics

Abstract

There is a general observation that the Curie temperature and piezoelectric property of the ferroelectric ceramics can be enhanced only at the expense of each other, i.e., higher piezoelectricity, lower Curie temperature, thus, limits their applications over broad temperature range. In this research, Sm-modified 0.15 Pb(Mg Nb )O -(0.85-x)PbZrO -xPbTiO ceramics have been studied, where excellent piezoelectric coefficients d = 720 pC/N, d ∗ = 950 pm/V and high Curie temperature T = 293 °C were simultaneously achieved for x = 0.42 composition by designing the morphotropic phase boundary (MPB) with local structural heterogeneity. Of particular significance is that a high thermal stability was observed with piezoelectric variation below 20% with temperature up to 280 °C, demonstrating that the x = 0.42 composition is a good candidate for piezoelectric application over broad temperature range where high temperature stability is required. This work provides a good paradigm for designing high-performance piezoelectric ceramics with high thermal stability via a combination of MPB and local structural heterogeneity. 1/3 2/3 3 3 3 33 33 C

Open Access Status

This publication may be available as open access

Funding Number

51790490

Funding Sponsor

National Natural Science Foundation of China

Share

COinS
 

Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.jmat.2020.11.012