Ultrafast Spin Dynamics of Electrochemically Grown Heusler Alloy Films

The electrochemical growth of Heusler alloy film with good morphological quality and crystalline order using single-crystalline substrate is demonstrated. Static magneto optical Kerr effect studies are employed to reveal the surface magnetization reversal of the films. An understanding of the intrinsic nature of the magnetization dynamics in this class of electrochemically grown materials is presented using time-resolved magneto optical Kerr effect measurements, under femtosecond laser excitation. Excitation laser fluence dependence study reveals the ultrafast demagnetization time, fast remagnetization time, and magnetic damping parameter as well as their correlation.

Automated summary

This study demonstrates the electrochemical growth of Heusler alloy film on a single-crystalline substrate with good morphological quality and crystalline order. The surface magnetization reversal of the films is revealed using static magneto optical Kerr effect studies. The understanding of magnetization dynamics in these materials is presented using time-resolved magneto optical Kerr effect measurements under femtosecond laser excitation, with further insights gained from excitation laser fluence dependence study on ultrafast demagnetization time, fast remagnetization time, and magnetic damping parameter correlations.