Atomic migration and ordering energies in FePd: Measurement and modeling

Monte Carlo simulations of the L10long-range order relaxation in dimensionally reduced systems

“…In good agreement with the predictions of the path probability method [21] and with many experimental and computational results in intermetallics [5,14,15,22,23,24,25], the relaxations of the LRO have been found to be well fitted with the sum of two exponentials yielding a long τ l and short τ s relaxation time:…”

“…They have been established as a powerful technique to investigate the kinetics relaxation of the long-range order in intermetallic [13,14,15].…”

Saddle-point energies and Monte Carlo simulation of the long-range order relaxation in CoPt

“…Due to the difference in structure, the process must be different in the L1 0 phase and the interpretation is still under investigation. However, recent MC simulations of the LRO relaxation in L1 0 -FePd showed that the fast process is highly predominant (up to 90%) below the order-disorder transition [50]. In view of these results and considering the temperature range of our simulations, we have chosen to fit the kinetics using a single exponential yielding a single relaxation time τ which fulfils an Arrhenius law with a positive migration energy E M = 0.73 ± 0.15 eV (Fig.…”

Magnetostriction properties of FePd thin films: Dependence on microstructure

“…Alloys in the range of Fe-49 at% Pd to Fe-58 at% Pd, which crystallize in the L1 0 structure [1], show a high magneto-crystalline anisotropy, the tetragonal c-axis being the easy axis of magnetization The long-range order (LRO) parameter S decreases with increasing annealing temperature [2] and annealing of bulk specimens at 733 K for 15 h leads to S = 0.71 [3]. Recent studies showed that the order parameter is further drastically reduced, when the grain size drops below 8 nm [4].…”