Alemayehu, R.; Zeuschner, S.; von Reppert, A.; Roessle, M.; Alexe, M.; Bargheer, M.: Rapid heat assisted polarization reversal in a ferroelectric thin film. Applied Physics Letters 127 (2025), p. 242902/1-5
10.1063/5.0297680
Open Access Version
Abstract:
We demonstrate that switching of ferroelectric thin films sandwiched between metallic electrodes can be controlled by laser-assisted heating ,reminiscent of heat-assisted magnetic recording. We employ electrical switching cycles that quantify the electrically switchable remanent polarization P(r )and show that 300 ns voltage pulses alone change the polarization by less than Delta PP-r of the average polarization. The transient average temperature modeled by the heat equation can rationalize the polarization change observed for different relative timings Delta t of the laser pulse if it arrives before the electrical pulse.