Effect of P addition on the structure and magnetic properties of melt-spun Fe–Pt–B alloy

Coercivity Mechanism and Magnetization Reversal Process in Nanocomposite Pr2Fe14B/α‐Fe Alloy with Phosphorous Addition

“…The minor hysteresis loops and initial magnetization curves show the dominant domain wall pinning in the ribbon with 0-0.1 at% P, nucleation and pinning in the ribbon with 0.3 at% P, and dominant domain nucleation in the ribbon with 0.5 at% P. weak and wider; meanwhile, that of soft α-Fe becomes narrow, which indicates that the addition of P can reduce the crystallinity of hard phase significantly and increase amorphous phase effectively. [13] The volume fractions of the soft α-Fe phase and hard 2:14:1 phase have been calculated using equation…”

“…With the increase of P content, the prominent diffraction peaks belonging to the hard 2:14:1 phase becomes weak and wider; meanwhile, that of soft α‐Fe becomes narrow, which indicates that the addition of P can reduce the crystallinity of hard phase significantly and increase amorphous phase effectively. [ 13 ] The volume fractions of the soft α‐Fe phase and hard 2:14:1 phase have been calculated using equation , where denotes integrated intensity of the soft or hard phase. The integrated intensity of the amorphous phase is represented by and k = 1.08 is a constant factor.…”

“…[ 12 ] Substitution of B by 5 at% P in Fe 55 Pt 25 B 20 ribbon can increase the volume fraction of hard magnetic and amorphous phases and increase coercivity value from 533 to 962 kA m −1 . [ 13 ] In Nd 9.5 Fe 84 B 6.5 alloy system, 0.1 at% P addition can achieve remanence value up to 1.18 T and (BH) max value of 190 kJ m −3 along the direction perpendicular to the ribbon plane. [ 14 ] Nonetheless, the influence of phosphorus on the magnetization reversal process and the coercivity mechanism in nanocomposite materials has not been intensively studied so far.…”