“…A. Balamurugan et al have studied the effect of natural fuel lemon juice and heating temperature on structural, electromagnetic and humidity sensing properties of sol-gel synthesized magnesium substituted copper ferrite (Mg 0.4 Cu 0.6 Fe 2 O 4 ) nanoparticles. So, there is no sequential investigation of different characteristics of copper doped magnesium ferrite nanoparticles [ 23 ]. L. Rajadurai et al has prepared Mg1-xCuxFe2O4 (x = 0.0, 0.1, 0.3, and 0.5) nanoparticles by microwave assisted combustion technique using l -arginine as fuel and studied their photocatalytic efficiency with mechanism for Mg 0.7 Cu 0.3 Fe 2 O 4 nanoparticles [ 24 ] .…”