Influence of 50 MeV Li3+-ion irradiation on structural and magnetic properties of Ti4+-substituted Li0.5Al0.1Fe2.4O4

Abstract The consequences of 50 MeV Li 3+ ion irradiation on the structural and magnetic behaviour of polycrystalline samples of spinel ferrite system Li 0.5+0.5 x Ti x Al 0.1 Fe 2.4−1.5 x O 4 are investigated by using X-ray diffraction (XRD), magnetization and 57 Fe Mossbauer spectroscopy. The Mossbauer spectra exhibit central enhancement after SHI-irradiation, which is attributed to the paramagnetic centres created due to the irradiation. The reduction observed in the saturation magnetic moment after SHI-irradiation is ascribed to the partial formation of paramagnetic centres and rearrangement of the cations in the lattice corroborated by XRD and Mossbauer Loretnzian intensity analysis. The presence of amorphous phase in the irradiated samples is ruled out.