Silver-substituted lithium ferrites (Li_0.5-xAg_xFe_2.5O₄; x=0, 0.025, 0.05, 0.075, 0.1nanoparticles were prepared via citrate autocombustion method. All the ferritesamples have been characterized using XRD, TEM, χ_M, VSM, and ac electricalconductivity. The crystallite size is between 44 to 49 nm. The saturation magnetizationreaches a maximum value of 69 emu/g. mole higher than the undoped sample at 50emu/g. mole. The Curie temperature improves 1.1 times on the undoped sample. Theincrease in the dielectric constant by Ag⁺ depends on the electronic configuration of thedifferent Ag content.