Influence of defect chemistry on ferroelectric properties of KNN

Despite the optimized and promising properties, KNN is rarely found in applications so far. This can be mainly attributed to the comparably high leakage currents and low density. The high leakage currents often result from extrinsic and intrinsic point defects. It was assumed that the knowledge from point defect thermodynamics on lead-based ceramics can be directly transferred to the lead-free material.

AZ: AL 578/23-1

Project period: Funding since 2019, start of project: 07.2021

The project is worked on together with Dr. Till Frömmling.