Latest Academic Works
Local mechanical properties of perovskite oxide ferroelectric materials
Ferroelectric materials have the ability to convert electrical energy into mechanical energy and vice versa, which makes them widely used as sensors, actuators, and ultrasonic transducers. While their electrical and electromechanical properties are well studied, mechanical properties like Young’s modulus (E) and hardness (H) remain known to a lesser extent. …
Atomically resolved transmission electron microscopy and in-situ voltage driven dynamic response of domain walls in lead-free ferroelectrics
Ferroelectric domain walls (DWs) are nano-to-atomic-scale interfaces that separate domains of different polar order. What makes DWs so interesting is their dynamic nature in an electric field, which offers an exciting potential for nanoscale and atomic-scale applications, but, also, more generally, the dynamics of DWs is linked to a fundamental …
Low-temperature sintering of piezoelectric K0.5Na0.5NbO3 ceramics
The KNN solid solution was prepared from pre-synthesized binary compounds of, sodium and potassium niobate in a 1/1 molar ratio. The KNG sintering aid was prepared by homogenizing the pre-reacted binary mixtures of alkaline reagents and germanium oxide with the Na/Ge = 1/1 and K/Ge = 1/1 molar ratios. The …