Cold-Sintered Perovskites: Atomic-Scale Insights Into Sustainable Ceramic Processing
Student Contest:
Yes
Affiliation Type:
Academia
Keywords:
Cold sintering process, lead-free, 4DSTEM
Abstract:
To investigate the nano- to atomic-scale characteristics of cold-sintered lead-free perovskite ferroelectrics, we combine 4-dimensional scanning transmission electron microscopy (4D-STEM) and diffraction/image simulation techniques. To first establish an understanding of charge distribution in a perovskite lattice we performed convergent beam electron diffraction (CBED) simulations on pristine perovskite lattices using abTEM. These simulations provide a reference for experimental 4D-STEM data on pristine and defected perovskite lattices (with dislocations), with the latter showing significant strain and charge accumulation at the crystal defect sites. The aim is to understand the impact of chemistry and pressure during the cold sintering process on the structure and electromechanical properties of lead-free ferroelectrics, exemplified by KNN and BFO.
Track ID:
1.4
Track Name:
ISAF: Characterization & Properties of Ferroelectrics & Related Materials
Secondary Track ID:
1.1
Secondary Track Name:
Isaf: Fundamentals Of Ferroelectrics, Multiferroics & Related Materials
