Ultrafast magnetization dynamics in NiCo thin films presenting weak stripes magnetic domains

Juliette Dubois; Boris Vodungbo; Marcel Hennes; Guillaume Lambert; Emmanuelle Jal; Renaud Delaunay; Frank Vidal

doi:10.1117/12.3022396

11 June 2024 Ultrafast magnetization dynamics in NiCo thin films presenting weak stripes magnetic domains

Juliette Dubois, Boris Vodungbo, Marcel Hennes, Guillaume Lambert, Emmanuelle Jal, Renaud Delaunay, Frank Vidal

Proceedings Volume PC12992, Advances in Ultrafast Condensed Phase Physics IV; PC1299208 (2024) https://doi.org/10.1117/12.3022396
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Controlling magnetization without using magnetic fields is a technology-driven strong motivation in the quest for new electronic devices allowing for fast control with low energy consumption. A lot of results exist for ultrafast demagnetization in pure material (as pure Ni for example) but it is essential to understand this phenomenon in alloys or hetero structures since these systems present the highest potential for applications. We describe how we are using the chemical selectivity and the optical properties of the high harmonics to study the demagnetization induced by femtosecond laser pulses in thin nickel cobalt films presenting weak stripes magnetic domains.

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Citation Download Citation

Juliette Dubois, Boris Vodungbo, Marcel Hennes, Guillaume Lambert, Emmanuelle Jal, Renaud Delaunay, and Frank Vidal "Ultrafast magnetization dynamics in NiCo thin films presenting weak stripes magnetic domains", Proc. SPIE PC12992, Advances in Ultrafast Condensed Phase Physics IV, PC1299208 (11 June 2024); https://doi.org/10.1117/12.3022396

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KEYWORDS

Nickel

Thin films

Ultrafast phenomena

Alloys

Cobalt

Magnetism

Nanowires

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