Ultrasonic measurement of the elastic constants of selected nonlinear optical /semiorganic crystals with orthorhombic symmetry

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Ultrasonic measurement of the elastic constants of selected nonlinear optical /semiorganic crystals with orthorhombic symmetry

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dc.contributor.author Alex,A V
dc.contributor.author Jacob,Philip
dc.date.accessioned 2008-12-03T10:54:29Z
dc.date.available 2008-12-03T10:54:29Z
dc.date.issued 2001-05
dc.identifier.citation Department of Instrumentation en_US
dc.identifier.uri http://dyuthi.cusat.ac.in/purl/997
dc.description.abstract Ultrasonic is a good tool to investigate the elastic properties of crystals. It enables one to determine all the elastic constants, Poisson’s ratios, volume compressibility and bulk modulus of crystals from velocity measurements. It also enables one to demonstrate the anisotropy of elastic properties by plotting sections of the surfaces of phase velocity, slowness, group velocity, Young’s modulus and linear compressibility along the a-b, b-c and a-c planes. They also help one to understand more about phonon amplification and help to interpret various phenomena associated with ultrasonic wave propagation, thermal conductivity, phonon transport etc. Study of nonlinear optical crystals is very important from an application point of view. Hundreds of new NLO materials are synthesized to meet the requirements for various applications. Inorganic, organic and organometallic or semiorganic classes of compounds have been studied for several reasons. Semiorganic compounds have some advantages over their inorganic and inorganic counterparts with regard to their mechanical properties. High damage resistance, high melting point, good transparency and non-hygroscopy are some of the basic requirements for a material to be suitable for device fabrication. New NLO materials are being synthesized and investigation of the mechanical and elastic properties of these crystals is very important to test the suitability of these materials for technological applications en_US
dc.language.iso en en_US
dc.publisher Cochin University of Science and Technology en_US
dc.subject Ultrasonic measurement en_US
dc.subject Sodium p-nitrophenolate dihydrate (NPNa) en_US
dc.subject Potassium acid phthalate (KAP) en_US
dc.subject Zinc tris (thiourea) sulphate (ZTS) en_US
dc.subject Benzoyl glycine (BG) en_US
dc.subject Di-Ammonium hydrogen citrate (DAHC) en_US
dc.subject Elastic properties en_US
dc.title Ultrasonic measurement of the elastic constants of selected nonlinear optical /semiorganic crystals with orthorhombic symmetry en_US
dc.type Thesis en_US


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