C Kandaswami Naidu College For Men Cknc

Chennai, India

C Kandaswami Naidu College For Men Cknc

Chennai, India
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Rafi Ahamed S.,Anna University | Srinivasan P.,Anna University | Balaji J.,Anna University | Gokul Raj S.,C Kandaswami Naidu College For Men Cknc | Mohan S.,Vel Technology University
Journal of Alloys and Compounds | Year: 2017

Optically good quality single crystals of Cesium Sulfamate (CeS) were grown by slow evaporation technique. The grown crystals were characterized by various characterization techniques such as single crystal XRD, FT-IR, dielectric, TG/DTA, microhardness and Z-scan studies. Single crystal X-ray Diffraction analysis confirms that the crystal belongs to the monoclinic crystal system. The functional groups present in the crystal was identified by FT-IR analysis. Dielectric studies were measured for the crystal from 50 Hz to 5 MHz at room temperature. The thermal studies were performed to know the thermal behavior. Mechanical behavior of the crystal was measured using Vickers microhardness tester. The etching technique was used to study the dislocations in the single crystals. The nonlinear absorption coefficient (β), nonlinear refractive index (n2) and third harmonic generation studies were also carried out for the title crystal. © 2017 Elsevier B.V.


Saravanan D.,Arni University | Senthil V.P.,Vel Technology Drrr And Drsr Technical University | Gokul Raj S.,C Kandaswami Naidu College For Men Cknc | Sudalai Raja G.,Presidency College at Chennai | And 3 more authors.
Materials Today: Proceedings | Year: 2017

Non-linear optical Sodium acid Phthalate (NaAP) single crystals was grown by slow evaporation from aqueous solutions. Structural characterization was carried out using X-ray diffraction analysis confirms the formation of the crystals in orthorhombic system with a space group of B2ab having unit-cell dimensions a = 9.2597(7)Å; b = 26.261(2)Å; c = 6.7355(6)Å; α = 90°; β = 90°; and γ =90°; Z=8. The vibrational frequencies of various functional groups present in the crystals have been ascertained through Fourier transform infrared spectroscopic (FTIR) analysis. Non-linear optical investigations carried out for the grown bulk crystals shows that the present crystal can be used as a high-frequency harmonic generators. The obtained results were discussed in detail. © 2017 Elsevier Ltd. All rights reserved.


Gokul Raj S.,C Kandaswami Naidu College For Men Cknc | Mathivanan V.,Presidency College at Chennai | Ramesh Kumar G.,Arni University | Yathavan S.,Arni University | Mohan R.,Presidency College at Chennai
AIP Conference Proceedings | Year: 2016

Tungsten bronze type cerium doped strontium barium niobate (Ce:SBN-Sr0.6B0.4Nb2O6) ceramics were synthesized by solid state process. Cerium was used as dopant to improve its electrical properties. Influence of Ce+ ions on the photoluminescence properties was investigated in detail. The grain size topographical behavior of SBN powders and their associated abnormal grain growth (AGG) were completely analyzed through SEM studies. Finally dielectric, measurement discusses about the broad phase transition observed due to cerium dopant The results were discussed in detail. © 2016 Author(s).

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