Science · 6 views
Shrinking iron films strengthens laser-driven demagnetization
From photos and videos to documents, vast amounts of data are stored on hard drives in large data centers. These devices use tiny magnetic regions whose orientation determines the information stored.
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A team from Collaborative Research Center 1242 at the University of Duisburg‑Essen, in partnership with Helmholtz‑Zentrum Berlin, studied how the thickness of an iron film influences its ultrafast demagnetization. The researchers used ultrashort laser pulses to trigger a rapid loss of magnetic order in the material. By varying the film thickness, they observed changes in how quickly the iron’s magnetic domains respond to the laser excitation. The study aims to understand whether thinner films can enable faster data storage technologies that rely on magnetic orientation.
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