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Synthesis, Growth and Characterization of maleic acid doped ammonium dihydrogen phosphate crystal s

Z.DELCI1,* , D.SHYAMALA1, S.VIGNESHWARAN1, A.THAYUMANAVAN2

Affiliation

  1. Department of Physics, D.G.Vaishnav College, Chennai 600 106, India
  2. Department of Physics, A.V.V.M Sri Pushpam College, Thanjavur 613 503, India

Abstract

In this paper, single crystals of maleic acid doped Ammonium Dihydrogen Phosphate (ADP-MA) is grown from aqueous solution, employing slow evaporation technique at room temperature. The presence of maleic acid is confirmed by 13C NMR and FTIR analyses. From the single crystal XRD, the crystal belongs to tetragonal system. The UV–Vis–NIR spectral analysis is carried out to confirm the transparency of the ADP-MA crystal. The microhardness of the grown crystals is determined. Thermal stability of the crystals is estimated using thermo gravimetric analysis. The nature of variation of dielectric constant ε′ and dielectric loss D in the frequency range of 50 Hz to 5 MHz is studied and reported. The second harmonic generation (SHG) efficiency of the crystal is found to be 3.44 times than that of ADP. The ADP-MA crystals have negative photoconducting nature..

Keywords

Solution Growth, ADP, 13C NMR, UV–Vis –NIR, photoconductivity, Dielectric measurements.

Submitted at: Feb. 28, 2013
Accepted at: July 10, 2014

Citation

Z.DELCI, D.SHYAMALA, S.VIGNESHWARAN, A.THAYUMANAVAN, Synthesis, Growth and Characterization of maleic acid doped ammonium dihydrogen phosphate crystal s, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 7-8, pp. 826-830 (2014)