Structural evolution and magnetic properties of nanocrystalline 50 Permalloy powders prepared by mechanical alloying

Simulation on the Factors Affecting the Crystallization Process of FeNi Alloy by Molecular Dynamics

“…With the experimental method, FeNi alloys were successfully fabricated by the evaporation method at temperature ( T ) = 1823 K with Fe concentrations of 36%, and the size ( D ) varies from 20 nm to 100 nm; the hydrogenation reaction gives spherical nanoparticles with size smaller than 35 nm; and the plasma treatment in the mixture of H 2 and Ar leads to nanoparticles with nanoscale size . The latter depends on the temperature and air flow rate, pyrolysis conditions, and preparative methods. − Fe 1– x Ni x alloys with size 10–25 nm , are being implemented very little by the experimental method, whereas the simulation method is considered the most interesting method because of its ability to study at the atomic level without the consumption of energy as in the experimental methods. They were built by molecular dynamics (MD) method, Monte-Carlo method, combined with interaction potentials, such as the average effective field theory, atomic method, Finnis and Sinclair, , and embedded interaction Sutton–Chen (SC). , The obtained results are highly accurate.…”

Influence of milling time on microstructure and magnetic properties of Fe80P11C9 alloy produced by mechanical alloying

“…2, a continuous decrease of the lattice strain occurred above 20 h of milling can be correlated with rearrangement and annihilation of the dislocations (dynamic recovery) and decreasing the fraction of low-angle boundaries via mechanically driven grain rotation and/or dynamic recrystallization [13,33] . It should be pointed out that the decrease in the lattice strain during ball milling has been already reported by various researchers [34,35].…”

“…Besides the dynamic recovery, the microstrain reduction may happen owing to the local increase in the temperature caused by ball-powder-ball collisions [34]. Further milling of the nanocrystals (beyond 70 h) with smaller microstrain produced via grain rotation or dynamic recrystallization can increase their lattice strain again, as can be seen in Fig.…”

Synthesis and Properties of Fe-Ni Nanoparticles

“…Bimetallic nanoparticles are widely used in their practical applications for catalysis, magnetic recording, magnetic fluids, and ________ biomedical applications. Bimetallic alloy nanoparticles can be prepared by many methods, such as mechanical milling, chemical, physical, and sol-gel [1][2][3][4][5]. With bimetallic alloys, the phase structure of the alloy is influenced by atomic arrangement in the crystal lattice.…”