Cationic coordination compound Cs{sub 2}Hg{sub 3}I{sub 8} for IR NLO material: Synthesis, crystal growth and characterizations

Journal Article · Wed Jun 24 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4918042· OSTI ID:22490483

Sathiskumar, S.; Kathiravan, P.

Single crystals Cs{sub 2}Hg{sub 3}I{sub 8} of dimensions 5 × 3 × 4   mm{sup 3} were grown by solution growth method at room temperature and structurally characterized by single crystal X – ray diffraction. Cs{sub 2}Hg{sub 3}I{sub 8} compound crystallizes in a noncentrosymmetric space group Cm with the crystal data of a = 7.4415 Å, b = 21.6629 Å, c = 7.6726 Å, α, β = 90°, γ = 108.05° and Z = 2. The grown crystals were characterized by powder X – ray diffraction analysis and the various diffraction planes are indexed. The presence of functional groups was identified qualitatively by Fourier transform infrared and FT – Raman spectral analyses. Ultraviolet – visible spectral analyses shows that the crystal has low UV cut off at 388 nm combined with very good transparency of 98 % in a wide range. The optical band gap was estimated to be 3 eV. Mechanical hardness of the grown crystal Cs{sub 2}Hg{sub 3}I{sub 8} was determined. The dielectric response of the crystal with varying frequencies was studied. Differential scanning calorimetry (DSC) analysis shows that the grown crystal has very good thermal stability up to 97.5°C.

• OSTI ID: 22490483
• Journal Information: AIP Conference Proceedings, Vol. 1665, Issue 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CALORIMETRY
CRYSTAL GROWTH
DIELECTRIC MATERIALS
DIFFERENTIAL THERMAL ANALYSIS
EV RANGE
FOURIER TRANSFORMATION
FREQUENCY DEPENDENCE
HARDNESS
INFRARED SPECTRA
LATTICE PARAMETERS
MONOCRYSTALS
OPACITY
PHASE STABILITY
POWDERS
RAMAN SPECTROSCOPY
SYNTHESIS
ULTRAVIOLET RADIATION
X-RAY DIFFRACTION