Investigations of microscopic magnetic properties of the pseudo-binary system (Zr1-xTix)Fe2

The magnetic structure and hyperfine interactions in the polycrystalline pseudo-binary system (Zr1-xTix)Fe2 for x ≤ 0.2 and x ≥ 0.7 were studied using the techniques of neutron diffraction and the Moessbauer effect. The results of our measurements reveal the cubic C15 and the hexagonal C14 crystal structure for low and high Ti atom concentration x, respectively. For the ferrimagnetic region of the C15 structure the reduction from 1.58(5) to 1.30(6) μB of Fe magnetic moments with increasing x at room temperature was found. The presence of two hyperfine magnetic fields in the antiferromagnetic C14 phases suggests the existence of small magnetic moments on Fe atoms at 2a in addition to those present at the 6h sites. The magnetic structure refinement for the (Zr0.3Ti0.7)Fe2 alloy yielded magnetic moments perpendicular to the c axis of 0.19(10)μB at Fe 2a sites at 10K. The results confirm the spin-canted antiferromagnetic structure with a canting angle of 8 degrees at 10 K in the pseudo-binary phase