Laser single-shot magnetization reversal in Co$_{1-x}$Lu$_x$ nanostructures - Archive ouverte HAL
Article Dans Une Revue Physical Review B Année : 2023

Laser single-shot magnetization reversal in Co$_{1-x}$Lu$_x$ nanostructures

Yi Peng
  • Fonction : Auteur
Grégory Malinowski
W. Zhang
  • Fonction : Auteur
Daniel Lacour
François Montaigne
Stéphane Mangin
Michel Hehn
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Résumé

The magnetic properties of Pt/Co$_{1-x}$Lu$_x$/Pt thin films have been investigated. For an alloy thickness of 3 nm, the saturation magnetization linearly decreases from 830 kA/m to 400 kA/m for x varying between 18% and 40%, including the proximity-induced moment in platinum. Furthermore, we show that Co$_{1-x}$Lu$_x$ alloys 3 nm thick thin films have a perpendicular magnetic anisotropy for a concentration ranging between 25% and 40%. A single femtosecond laser shot leads to a demagnetized state with a domain size that increases with the decrease of saturation magnetization. Patterning the layer into dots leads to a single domain structure that can be fully reversed using a single laser pulse. The statistics and the origin of the nondeterministic reversal are discussed based on the atomistic model.
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Dates et versions

hal-04244300 , version 1 (02-08-2024)

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Citer

Yi Peng, Grégory Malinowski, W. Zhang, Daniel Lacour, François Montaigne, et al.. Laser single-shot magnetization reversal in Co$_{1-x}$Lu$_x$ nanostructures. Physical Review B, 2023, 107 (21), pp.214415. ⟨10.1103/PhysRevB.107.214415⟩. ⟨hal-04244300⟩
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