Nanocrystallization in Amorphous Fe–P–V Alloys under Pulsed Irradiation

Effects of Thermal Annealing and Pulsed Photon Processing on the Magnetomechanical Properties of the Amorphous Fe79.3P18.2V2.5 Alloy

“…(Fe,V) 2 P was present in minor amounts and was less stable under pulsed irradiation than σ'-(Fe,V). With increasing T ann and E r , the α-Fe, (Fe,V) 3 P, and σ'-(Fe,V) precipitates increased in size, the growth rate being the fastest for α-Fe [4]. Note that, at T ann ≤ 770 K and E r ≤ 15 J/cm 2 , all of the precipitates were less than 50 nm in size.…”

“…In earlier studies [4,8], both thermal annealing at T ann ≥ 720 K and pulsed irradiation with E r ≥ 11 J/cm 2 were found to give rise to crystallization of amorphous Fe 79.3 P 18.2 V 2.5 , with precipitation of stable (α-Fe, (Fe,V) 3 P) and metastable (σ'-(Fe,V), (Fe,V) 2 P) phases. (Fe,V) 2 P was present in minor amounts and was less stable under pulsed irradiation than σ'-(Fe,V).…”

“…Heat treatment causing no stabilization of the domain structure is performed for 10 2 to 10 3 s. Joule heating (by applying an electric current to the alloy) requires 0.2 − 5 s. Another rapid heat treatment is pulsed photon processing, in which the alloy is exposed to the radiation from a high-power source for ≤ 10 s [4].…”