Novel magnetic properties of nanostructured Fe50Cr40P10 (wt.%) powders

Abstract

The purpose of this investigation is to examine the evolution of phase formation, structural, microstructural, and magnetic properties of the Fe₅₀Cr₄₀P₁₀ (wt.%) powder mixture as a function of milling time. The Rietveld refinements of X-ray diffraction patterns indicated the formation of two bcc chromium solid solutions, Fe₃₃Cr₂ and Fe₂Cr₅, embedded within α-Fe (P) solid solution. The magnetic measurements reveal a ferromagnetic behavior regardless of milling time, but highlight a new behavior of phosphorus as an alphagen element to promote the alpha iron chromium solid solution formation with lower hysteresis loss energy and maximum values of the magnetic properties (coercivity, H_c, nucleation field, H_n, initial µ_i and maximum µ_max magnetizations permeabilities as well as the hysteresis loss energy E_HL). The evolution of magnetic fields has been correlated with the evolution of <L>, rms <σ²>^1/2, and dislocation density ρ.