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This is a Quantitative Study study.

September 19, 2025

Spin dynamics in elemental Ni and Ni

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Comparison of ultrafast spin dynamics reveals distinct magnetic responses in Ni and Ni85Co15 alloy, highlighting probing energy effects.

A significant laser-induced reduction in magnetic scattering peaks occurs on femtosecond timescales.
The probing wavelength critically influences the observed dynamics, with variations in quenching amplitudes.
A delay of about 17 fs in Ni85Co15 alloy's intensity dynamics indicates differing ultrafast responses of Co and Ni.
This unique delay is absent in pure Ni, underscoring the impact of alloying on magnetic behavior.

Dubois et al. (2025) studied this question.

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