Synthesis and characterization of spin frustrated Fe doped LiCrO2

Abstract

LiCrO2 and Fe doped LiCrO2 are prepared by solid state reaction method using LiCO3, Cr2O3, and Fe2O3. From XRD data analysis we could confirm the phase purity of all the samples; LiCrO2, LiCr0.98Fe0.02O2, and LiCr0.95Fe0.05O2. All the three samples show dispersion in dielectric constant (år) and dielectric loss factor (tan ä) values. The dielectric constant as a function of frequency at different bias voltage has also been studied. Magnetization measurement for LiCrO2 using a SQUID magnetometer in a constant magnetic field of 100 Oe under zero field cooled and field cooled condition show the antiferromagnetic transition temperature, TN ~ 64K. The UV visible plot reveals the slightly increase in band gap due to doping.