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Synthesis, spectral and thermal properties of non‐linear optical crystal ZnMg(SCN) 4
Author(s) -
Bharathi Kannan R.,
Chandramohan A.,
Chandra Sekar J.,
Kandhaswamy M. A.
Publication year - 2007
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200610869
Subject(s) - monoclinic crystal system , thermogravimetric analysis , thiocyanate , differential thermal analysis , fourier transform infrared spectroscopy , chemistry , thermal decomposition , bimetallic strip , crystallography , thermal analysis , analytical chemistry (journal) , differential scanning calorimetry , single crystal , crystal (programming language) , crystal structure , materials science , metal , inorganic chemistry , diffraction , thermal , optics , organic chemistry , physics , meteorology , thermodynamics , programming language , computer science
Single crystals of zinc magnesium tetra thiocyanate [ZnMg(SCN) 4 ], a bimetallic thiocyanate complex, were grown by slow evaporation solution growth technique at room temperature. The bright, transparent and colourless crystals have well defined faces. The grown crystals were characterized through elemental analysis, powder X‐ray diffraction (XRD), thermogravimetric (TG) and differential thermal analysis (DTA), differential scanning calorimetric analysis (DSC), Fourier Transform Infra red (FTIR) and Optical studies. The elemental analysis confirms the stoichiometry of the synthesized crystals. The compound crystallizes under monoclinic structure with lattice parameters a = 10.055 Å, b = 7.44 Å, c = 6.00 Å and β = 90.113°. The TGA indicates 25 % weight loss at 205°C from which the decomposition pattern is formulated. The DSC study indicates that the crystal undergoes only first order phase transitions. The FTIR spectrum indicates among others the presence of metal‐nitrogen and metal‐sulphur bonds thus confirming the formation of the complex. The second harmonic‐generation (SHG) was confirmed by the emission of green radiation using Nd: YAG laser. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)