Dynamic Manipulation in Piezoresponse Force Microscopy: Creating Nonequilibrium Phases with Large Electromechanical...

Area of Science:

• Materials Science
• Condensed Matter Physics
• Nanotechnology

Background:

• Ferroelectric domain walls are key for advanced electronic devices like memory and logic.
• Their dynamics influence mesoscale phenomena, including electromechanical responses and memory effects.
• Studying local physics of domain walls is challenging due to their dynamic nature and displacement under external stimuli in techniques like piezoresponse force microscopy.

Purpose of the Study:

• To introduce a novel approach for controlling and modifying ferroelectric domain structures.
• To enable state-conditioned modification routes for domain structures.
• To explore domain wall dynamics and create metastable phases with enhanced electromechanical properties.

Main Methods:

• Development of an automated experimentation platform utilizing real-space image-based feedback.
• Real-time control of tip bias during ferroelectric switching.
• Conditioning modification pathways based on the observed domain states beneath the microscopy tip.

Main Results:

• Demonstration of a new method for precise control and modification of ferroelectric domain structures.
• Successful exploration of domain wall dynamics under controlled conditions.
• Creation of metastable ferroelectric phases exhibiting significant electromechanical responses.

Conclusions:

• Automated experimentation with image-based feedback offers a powerful tool for manipulating ferroelectric domain structures.
• This approach overcomes limitations of traditional methods, enabling deeper understanding of domain wall physics.
• The developed technique facilitates the design of novel ferroelectric materials and devices with tailored functionalities.