Skyrmion nanodomains in ferroelectric-antiferroelectric solid solutions

Area of Science:

• Materials Science
• Condensed Matter Physics
• Nanotechnology

Background:

• Polar skyrmions exhibit unique physics and properties for novel functionalities.
• Existing skyrmion nanodomains are limited to specific material systems requiring complex boundary conditions.
• This limitation restricts the widespread application of skyrmions in electronic devices.

Purpose of the Study:

• To demonstrate the formation of widespread skyrmion nanodomains in ferroelectric-antiferroelectric solid solutions.
• To explore the stabilization mechanisms of these topological phases through engineered couplings.
• To investigate the potential of these materials for advanced electronic applications.

Main Methods:

• Fabrication of ferroelectric-antiferroelectric solid solutions (Pb(Ti,Sn)O3, Pb(Ti,Hf)O3, Pb(Ti,Zr)O3).
• Engineering of dipole-dipole and antiferrodistortive-dipole couplings.
• Construction of a phase diagram to identify skyrmion stabilization regions.

Main Results:

• Widespread skyrmion nanodomains were successfully formed in the studied solid solutions.
• The stabilization of topological phases was achieved by competing ferroelectric and antiferroelectric polar orderings.
• A phase diagram was established, detailing the regions for skyrmion nanodomain stabilization.
• The observed skyrmions demonstrated enhanced switching characteristics, reversible manipulation, and long-term retention.

Conclusions:

• Ferroelectric-antiferroelectric solid solutions provide a viable platform for widespread polar skyrmion formation.
• Engineered couplings offer a method to stabilize topological phases in these materials.
• The improved electrical manipulation properties open avenues for topological electronics and advanced devices.