Uncovering the influence of Ni2+ on optical and dielectric properties of NH4H2PO4 (ADP) crystal

Ammonium dihydrogen phosphate (ADP) crystal hold strong impetus in photonic industries for distinct applications therefore in current investigation slow solvent evaporation technique has been employed to grow pure and Ni2+ ion doped ADP crystal at room temperature and emphasis was given to explore the synchronized influence of each mole concentration of dopant Ni2+ ion on studied properties of ADP crystal. The qualitative analysis of grown crystals has been achieved by means of energy dispersive spectroscopic analysis. The grown crystals were subjected to single crystal X-ray diffraction analysis to determine the crystal structure, space group and unit cell dimensions. The UV-vis spectral analysis has been employed within wavelength range of 200-900 nm to uncover the effect of increasing concentration of Ni2+ ion on optical transmittance of ADP crystal. The pure and Ni2+ ion doped ADP crystals were subjected to dielectric measurements at 30 °C to assess the frequency response of dielectric constant and dielectric loss.