Electrical conductivity and hopping conduction mechanism by CBH model in AgCoPO₄ compound prepared using solid-state reaction

The orthophosphates materials are one of the most important groups in the field technologically advanced materials that are accessible, inexpensive, and environmentally friendly. This materials are of great demand due to their various optoelectronic applications in recent years. In this study, a solid-state method was employed to synthesize the AgCoPO₄ orthophosphate sample. Analyzing the XRD pattern, of the studied compound, confirms the triclinic phase with the \(\text P\overline{1 }\) $\text{P}\overline{1}$  space group. The examination of SEM analysis and energy dispersive spectroscopy (EDS) revealed the same morphology and different particle sizes. As for the EDX analysis, all chemical elements were detected and found in their appropriate ratio. Besides, the impedance spectroscopy measurements conducted at 100 Hz to 5 MHz and 473–673 K are used to investigate the electrical and dielectric properties of the AgCoPO₄ compound. The frequency dependence of the conductivity of alternating current is explained using Jonscher’s law. The calculated activation energy is in accordance with Arrhenius’s behavior based on DC conductivity, which was determined to be 0.93 (2) eV. The primary transport mechanism is governed by the correlated barrier hopping model. A comparative study of impedance and modulus responses versus frequency suggests Cole–Cole behavior. deep investigation of the electric and dielectric performances demonstrated a significant dielectric constant (ε′ ∼ 10⁴) at low frequencies and low dielectric loss at high frequencies. Thus, it highlights its exceptional dielectric potential, particularly in applications related to electronic capacitors.