Phase composition and magnetic properties of (Pr, Dy)–Fe–Co–(Ni, Mn)–B–Zr–Ti alloys

In the present work the influence of Ni and Mn admixture on the phase constitution and magnetic properties of Pr8Dy1Fe60Co7Ni6−xMnxB14Zr1Ti3 (where x = 0, 3, 6) alloys in a form of ribbons were investigated. In order to estimate the glass forming abilities, ribbons of various thicknesses were produced. Studies of phase constitution and magnetic properties of the annealed samples for alloys of various Ni and Mn contents were performed.

► Annealing of Pr8Dy1Fe60Co7Ni6−xMnxB14Zr1Ti3 (where x = 0, 3, 6) ribbons results in formation Pr2(Fe,Co)14B and soft magnetic α-Fe phases.
► Rietveld analysis of the XRD scans has shown no changes in the lattice parameters of the constituent phases with the admixture of Ni and Mn.
► The interactions between the hard magnetic nanocrystalline grains and the amorphous phase results in the remanence enhancement and square hysteresis loops.
► Presence of Ni in the amorphous phase improves the saturation magnetization of this phase and eventually the remanence of the alloy samples.
► Presence of Mn atoms in the alloy composition has an effect in the increase of the coercivity field.