Prefer a chat interface with context about you and your work?
Ultrafast demagnetization of Pt magnetic moment in L1<sub>0</sub>-FePt probed by magnetic circular dichroism at a hard x-ray free electron laser
We demonstrate ultrafast magnetization dynamics in a 5d transition metal using circularly-polarized x-ray free electron laser in the hard x-ray region. A decay time of light-induced demagnetization of L1${}_0$-FePt was determined to be $τ_\textrm{Pt} = 0.6\ \textrm{ps}$ using time-resolved x-ray magnetic circular dichroism at the Pt L${}_3$ edge, whereas magneto-optical …