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Please use this identifier to cite or link to this item: http://purl.org/purl/2028

Title: Ultrasonic measurement of the elastic properties of benzoyl glycine single crystals
Authors: Jacob, Philip
Alex,A V
Technology
Keywords: Benzoyl glycine
Non-linear optical crystals
Elastic constants
Ultrasonic measurements
Phase velocity surfaces
Issue Date: Jan-2004
Publisher: Indian Academy of Sciences
Abstract: Certain organic crystals are found to possess high non- linear optical coefficients,often one to two orders of magnitude higher than those of the well known inorganic non-linear optical materials.Benzoyl glycine is one such crystal whose optical second-harmonic generation efficiency is much higher than that of potassium dihydrogen phosphate. Single crystals of benzoyl glycine are grown by solvent evaporation technique using N,N-dimethyl formamide as the solvent.All the nine second-order elastic stiffness constants of this orthorhombic crystal are determined from ultrasonic wave velocity measurements employing the pulse echo overlap technique.The anisotropy of elastic wave propagation in this crystal is demonstrated by plotting the phase velocity, slowness,Young's modulus and linear compressibility surfaces along symmetry planes.The volume compressibility, bulk modulus and relevant Poisson's ratios are also determined. Variation of the diagonal elastic stiffness constants with temperature over a limited range are measured and reported.
URI: http://dyuthi.cusat.ac.in/xmlui/purl/2028
Appears in Collections:Dr. Jacob Philip

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