Communication Dans Un Congrès Année : 2026

Study of Thermal Hysteresis in FeRh Films Under Fast Temperature Modulation of the Phase Transition

Résumé

The thermal hysteresis exhibited by FeRh thin films under fast temperature driving is studied using a modulated reflectance setup. The antiferromagnetic/ferromagnetic (AF/FM) phase fraction modulation, driven by a pump-laser induced square-modulated periodic temperature change, is used to investigate the transition kinetics, and the associated thermal hysteresis. While the compliance with return-point-memory (RPM) is verified on the average, time resolved measurements of the modulated AF/FM fraction show, within certain temperature intervals, a complex stochastic behavior where randomly triggered phase changes define the way the material memory is stored, and erased.

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Dates et versions

hal-05600723 , version 1 (23-04-2026)

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  • HAL Id : hal-05600723 , version 1

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Alexis Pecheux, Laura Thevenard, Jon Ander Arregi, Vojtěch Uhlíř, Morgan Almanza, et al.. Study of Thermal Hysteresis in FeRh Films Under Fast Temperature Modulation of the Phase Transition. Intermag 2026, Apr 2026, Manchester (UK), United Kingdom. ⟨hal-05600723⟩
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