Premium
Studies on Dielectric Properties of ADP Crystals
Author(s) -
Bharati B.,
Devendrappa Mahalesh,
Pushapajali G. M.,
Sannakki Basavaraja
Publication year - 2019
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201900016
Subject(s) - dielectric , materials science , dielectric loss , permittivity , ammonium dihydrogen phosphate , tetragonal crystal system , crystal (programming language) , aqueous solution , lattice constant , analytical chemistry (journal) , diffraction , high κ dielectric , crystal structure , optics , crystallography , chemistry , optoelectronics , organic chemistry , fertilizer , physics , computer science , programming language
Ammonium dihydrogen phosphate (NH 4 HPO 4 , ADP) is an excellent inorganic nonlinear optical material with different device applications. The present work is based on the pure ADP crystals that is successfully grown from aqueous solution by slow evaporation technique at room temperature. The grown crystals are subjected to various characterizations like XRD, and dielectric studies. The crystalline nature and tetragonal structure of the grown crystals having lattice parameters are observed by powder X‐ray diffraction analysis. The dielectric properties such as dielectric constant and dielectric loss for the crystals at different areas are studied as a function of frequency in the range 50 kHz to 5 MHz at room temperature. It is found that the dielectric permittivity decreased exponentially at lower frequency region up to 1 kHz and then the dielectric permittivity remains constant at higher frequency region as the frequency increased. It is observed that as area of ADP crystal increases the dielectric constant increases and for area of 42 mm 2 the dielectric constant value is high among all the different areas of ADP crystals.