Abstract
In the present study, Li0.5+0.5xTixFe2.5−1.5xO4 (where, 0.0 ≤ x ≤ 1.0 in step of 0.2) nanoparticles were synthesized via sol–gel auto combustion technique. The nanocrystalline samples exposed to 60Co gamma (γ)-radiation of 5 Mrad dose, to understand its effect on structural, morphological, electrical and dielectric properties. The nanoparticles characterized by X-ray diffraction and field emission scanning electron microscopy (FE-SEM) techniques before and after irradiation. The irradiated samples give good crystallinity, and small crystallite size (~ 25 nm) as compared to pristine samples (~ 45 nm) and the lattice parameter gets decreased up to ~ 0.01 A. The FE-SEM images of pristine samples show spherical morphology, whereas irradiated samples showed some cracks in it. Temperature-dependent conductivity measured by two probe technique reveals that the conductivity decreases (upto ~ 5 × 10−5Ω−1) after irradiation by obeying Ohmic nature. The dielectric measurements show the strong influence of irradiation on all the samples.
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