(Bi0.5La0.5)FeO3 (BLFO) Orthoferrite ceramic was synthesized by a conventional solid-state method. X-ray diffraction study examined the phase purity, and the Rietveld refinement confirmed the presence of orthorhombic with a \(Pnma\) space group. FESEM examined the grain growth mechanism and elemental analysis. XPS and Raman spectroscopic studies investigate the oxidation state of elements, internal lattice modes of vibrations, and spin-phonon modes of atoms, respectively. The temperature-dependent dielectric study reveals that BLFO ceramics exhibit wide permittivity and loss tangent dispersions, indicating that dielectric properties stabilize at high frequencies. The grain resistance decreases with increasing temperature, and the dominance of grain boundary resistance at high temperatures is confirmed by complex impedance spectroscopy. The electrical and modulus spectroscopic studies revealed the evolution of single-ionized oxygen vacancies and relaxation mechanisms. The AC-conductivity study in BLFO ceramics is governed by the correlated barrier hopping mechanism facilitated by singly ionized oxygen ions. The weak ferromagnetic nature at low temperatures diminishes at room temperature, indicating antiferromagnetic behavior.
