Extending the scope and understanding of all-optical magnetization switching in Gd-based alloys by controlling the underlying temperature transients - Institut Jean Lamour Access content directly
Journal Articles Physical Review Applied Year : 2024

Extending the scope and understanding of all-optical magnetization switching in Gd-based alloys by controlling the underlying temperature transients

Maxime Verges
Wei Zhang
  • Function : Author
Jon Gorchon
Stephane Mangin
Michel Hehn
Julius Hohlfeld

Abstract

We use the thickness of Cu layers to control all-optical switching of magnetization in adjacent Gd$_{24}$(Fe$_{90}$⁢Co$_{10}$)$_{76}$ films. While increasing the Cu thickness from 5 to 900 nm has no effect on the switching threshold, it significantly enlarges the fluence and pulse duration at which multiple domains emerge. Having shown that thermally activated multidomain formation limits the maximum fluence and pulse duration for controlled switching, we demonstrate that continuous magnetization reversal precedes multidomain formation in Gd$_{18}$Dy$_4$Co$_{78}$ films excited with fluences slightly larger than the multidomain threshold.
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Dates and versions

hal-04585716 , version 1 (23-05-2024)

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Maxime Verges, Wei Zhang, Quentin Remy, Yann Le-Guen, Jon Gorchon, et al.. Extending the scope and understanding of all-optical magnetization switching in Gd-based alloys by controlling the underlying temperature transients. Physical Review Applied, 2024, 21 (4), pp.044003. ⟨10.1103/physrevapplied.21.044003⟩. ⟨hal-04585716⟩
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