High-field nonlinear properties and characteristics of domain wall motion in Fe₂O₃ doped PMnS-PZN-PZT ceramics

Abstract

High-field nonlinear dielectric and piezoelectric properties of Fe₂O₃ doped PMnS-PZN-PZT high-power piezoelectric ceramics are investigated. Rayleigh analysis reveals the presence of contributions from lossless reversible domain wall motion and the associated decoupling of nonlinearity and losses. This behavior is attributed to the orderly distribution of defect pinning centers. With the increase in temperature, the high-field nonlinearity becomes more pronounced. It is suggested that the depinning of domain walls arising from the randomization of defect pinning centers is responsible for this enhancement of high-field nonlinearity at the elevated temperatures.

Keywords:

• PMnS-PZN-PZT ceramics
• high-field electrical property
• Rayleigh model
• domain wall contribution

Additional information

Funding

This work was financially supported by the National Natural Science Foundation of China (No. 51572205), the Equipment Pre-Research Joint Fund of EDD and MOE (No. 6141A02022262), and the Fundamental Research Funds for the Central Universities (WUT: 2018III019, 2019IVA108).