Shkir, Mohd. and Riscob, B. and Hasmuddin, Mohd. and Singh, Preeti and Ganesh, V. and Wahab, M. A. and Dieguez, Ernesto and Bhagavannarayana, G. (2014) Optical spectroscopy, crystalline perfection, etching and mechanical studies on P-nitroaniline (PNA) single crystals. Optical Materials, 36 (3). pp. 675-681. ISSN 0925-3467

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Abstract

In this work we have presented the bulk growth of P-nitroaniline (PNA) single crystals by slow evaporation solution technique using methanol as a solvent at 300 K. Crystal system and lattice parameters were confirmed by powder X-ray diffraction analysis. Optical absorption and reflectance spectrums were recorded in the wavelength range of 150-3000 nm. Various optical parameters such as transmission (=>57%), optical band gap (=similar to 2.43 eV) were calculated. High-resolution X-ray diffraction study reveals that the grown crystal is having good crystalline perfection as the FWHM was found to be 39 arc s. Etching study was carried on PNA crystal with different etchants and suggests that the grown crystals are of better quality with less dislocation density (=3 x 103). The various mechanical parameters such as hardness, Mayer index, fracture toughness, brittle index were also calculated.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/S Elsevier.
Uncontrolled Keywords:	Optical materials Organic compounds Crystal growth X-ray diffraction Mechanical properties Optical properties
Subjects:	Materials Science Optics
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	29 Oct 2015 11:12
Last Modified:	29 Oct 2015 11:12
URI:	http://npl.csircentral.net/id/eprint/1450

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