Abstract
We report the evolution of magnetic moment as well as magnetic anisotropy with crystalline order in Co2MnSi thin films grown on (100) MgO by pulsed laser deposition. The films become more ordered as the annealing temperature (TA) increases from 400 to 600 °C. The extent of L21 ordering in the films annealed at 600 °C is ≈96%. The static magnetization measurements by vibrating sample magnetometry shows a maximum moment of 4.95 μB per formula unit with low coercivity (HC ≈ 65 Oe) in the films annealed at 600 °C. A rigorous analysis of the azimuthal and polar angle dependent ferromagnetic resonance (FMR) measured at several temperatures allows determination of various anisotropy fields relevant to our system as a function of TA. Finally, we have evaluated the exchange stiffness constant down to 100 K using spin wave modes in FMR spectra. We have also estimated the exchange energies as well as stiffness constant by ab initio calculations using the Korringa-Kohn-Rostoker method.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
