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Copper (Cu) doped barium hexaferrite BaFe_12−xCu_xO₁₉, (x = 0.0–2.0) were synthesized by the modified citrate sol-gel method. The structural, magnetic and electric properties have been investigated. All samples are crystallized to M-type hexagonal structure with P6₃/mmc space group. Lattice parameters are found to be maximum for x = 1.0, which has been correlated with the physical properties (magnetic & dielectric) of the material. The particle size distribution (found to be nm order) and surface morphology were analyzed by the FESEM (Field Emission Scanning Electron Microscopy) technique. The magnetic hysteresis (M-H) loops have been analyzed by employing the “Law of approach to saturation” and, important magnetic parameters are obtained. The saturation magnetization and magnetocrystalline anisotropy constants are found to be maximum for x = 1.0 sample, but the coercive field is found to a …