Probing Temperature‐Induced Phase Transitions at Individual Ferroelectric Domain Walls. (7th October 2022)

• Record Type: Journal Article
• Authors: Kelley, Kyle P.; Kalinin, Sergei V.; Eliseev, Eugene; Raghuraman, Shivaranjan; Jesse, Stephen; Maksymovych, Peter; Morozovska, Anna N.
• Is Part Of: Advanced Electronic Materials. Volume 9:Number 1(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-10-07
• Subjects: domain walls -- ferroelectric -- local heating -- phase transition -- piezoresponse force microscopy; Materials -- Electric properties -- Periodicals; Materials science -- Periodicals; Magnetic materials -- Periodicals; Electronic apparatus and appliances -- Periodicals; 537
• DOI: 10.1002/aelm.202200552
• Languages: English
• ISSNs: 2199-160X

Abstract

Abstract: Ferroelectric domain walls have emerged as one of the most fascinating objects in condensed matter physics due to the broad variability of functional behaviors they exhibit. However, the vast majority of domain walls studies have been focused on bias‐induced dynamics and transport behaviors. Here, the scanning probe microscopy approach based on piezoresponse force microscopy (PFM) with a dynamically heated probe, combining local heating and local biasing of the material is introduced. This approach is used to explore the thermal polarization dynamics in soft Sn2 P2 S6 ferroelectrics, and allows for the exploration of phase transitions at individual domain walls. The strong and weak modulation regimes for the thermal PFM are introduced. The future potential applications of heated probe approach for functional SPM measurements including piezoelectric, elastic, microwave, and transport measurements are discussed. Abstract : Here a new approach is introduced, ultra‐violet laser assisted thermal band excitation piezoresponse force microscopy, to probe thermal and voltage dynamics in functional materials based on the synergy of local heating and local biasing. This approach is used to explore the thermal polarization dynamics in Sn2 P2 S6 and allows for the exploration of local phase transitions at individual domain walls.