Growth and characterization of novel semi organic nonlinear optical urea lead acetate single crystal by solution growth technique

L-Valine zinc acetate (LVZA) was synthesized and its solubility was estimated in the solvent of double distilled water. Single crystals of LVZA were grown by slow evaporation solution growth technique. The cell parameters were obtained by single crystal X-ray diffraction study. Functional groups of LVZA were identified by FTIR analysis. UV-vis-NIR spectral studies showed the optical nature of LVZA. Kurtz powder technique revealed the SHG efficiency of LVZA. Thermal properties of the grown LVZA crystal were studied from TGA/ DTA and DSC spectrum. Vickers’s mechanical hardness values were found for the grown crystal.

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Solution Growth and Crystallinity Characterization of Bulk 6H-SiC

Materials Science Forum ◽

10.4028/www.scientific.net/msf.645-648.33 ◽

2010 ◽

Vol 645-648 ◽

pp. 33-36 ◽

Cited By ~ 13

Author(s):

Nobuyoshi Yashiro ◽

Kazuhiko Kusunoki ◽

Kazuhito Kamei ◽

Akihiro Yauchi

Keyword(s):

Grown Crystal ◽

Solution Growth ◽

Growth Technique ◽

Rocking Curve ◽

Long Time ◽

Crystal Seed ◽

Koh Etching ◽

Light Green ◽

Solution Growth Technique

The stable long time growth with the use of Si -C-Ti ternary solution was realized　by improving the thermal condition during the growth. We have succeeded in obtaining a maximum 10 mm thick bulk 6H-SiC crystal, which is the largest bulk crystal ever obtained by the solution growth technique. The obtained crystal was free of cracks and exhibited a homogeneous light green color. The crystallinity of the grown crystal was characterized by X-ray rocking curve measurements using (0006) reflection and by the molten KOH etching. The mapping of the full width at half maximum (FWHM) revealed the average FWHM around 30 arc seconds and the minimal FWHM under 16 arc seconds. The etch pit density (EPD) was typically in the range between 104 and 105 cm-2, which was comparable to that of the crystal seed.

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STUDIES ON GROWTH AND CHARACTERIZATION OF BIS THIOUREA LEAD CHLORIDE: A NOVEL NONLINEAR OPTICAL CRYSTAL

Journal of Nonlinear Optical Physics & Materials ◽

10.1142/s0218863509004531 ◽

2009 ◽

Vol 18 (01) ◽

pp. 153-159 ◽

Cited By ~ 1

Author(s):

K. KIRUBAVATHI ◽

K. SELVARAJU ◽

S. KUMARARAMAN

Keyword(s):

Nonlinear Optical ◽

Hardness Test ◽

Lead Chloride ◽

Infrared Analysis ◽

X Ray Diffraction ◽

Growth Technique ◽

Metal Organic ◽

First Time ◽

Solution Growth Technique

Single crystals of the metal-organic nonlinear optical material bis thiourea lead chloride were grown from solution growth technique for the first time. The grown crystals were characterized by single crystal X-ray diffraction analysis to confirm the crystal structure. The presence of various functional groups and the coordination of metal ions to thiourea were confirmed by Fourier transform infrared analysis. UV-Vis. spectrum was recorded to study the optical transparency of the grown crystals. The second order nonlinear optical property of the grown crystal was examined by Kurtz powder technique and mechanical behavior was studied by Vickers micro hardness test.

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