Investigation of structural and electrical characteristics of the honeycomb-lattice BaNi1.5Co0.5(PO4)2

We report a comprehensive study of the single-phase polycrystalline BaNi1.5Co0.5(PO4)2 material synthesized via a solid-state technique. In order to assess the structural characteristics and progress of the synthesis of BaNi1.5Co0.5(PO4)2, we analysed the material by X-ray diffraction (XRD) with a Cu-K alpha radiation source (lambda = 1.54 & Aring;). The diffraction results reveal a trigonal crystal structure with a space group. To further investigate the sample's properties and examine its microstructure, we utilised field-emission scanning electron microscopy (FESEM) and energy-dispersive X-ray spectroscopy (EDX) to analyse the surface morphology and elemental composition, confirming the presence of specific elements. Raman spectroscopy and FTIR analysis indicated that the different vibrational modes exhibited various stretching and vibrational patterns. As the frequency increases, the dielectric constant and loss factor of the composites decrease due to relaxation, as evidenced by the investigation of dielectric properties. The spectra of electrical modulus and impedance showed deviations from the ideal Debye-like relaxation, suggesting a more intricate dielectric behaviour.