Structural and microhardness studies of a NLO material–bisthiourea cadmium chloride

Single crystal of 2 mol% glycine doped Bis Thiourea Cadmium Chloride, a semi organic nonlinear optical material has been grown by slow evaporation technique. Good quality single crystal with dimension 14 × 12 × 5 mm3 was harvested after 35 days. The influence of amino acid glycine was studied for 1, 2 and 3 mol% glycine doped Bis Thiourea Cadmium Chloride by Kurtz and Perry powder second harmonic generation test and compared with pure Bis Thiourea Cadmium Chloride which confirms the enhancement of second harmonic generation property of glycine doped Bis Thiourea Cadmium Chloride. The large enhancement was found for 2 mol% glycine doping. The grown crystal was characterized by various characterizations viz. single crystal X‐ray diffraction, energy dispersive X‐ray (EDAX), Fourier Transform Infrared Spectroscopy (FTIR) analysis, UV‐visible absorption, thermo gravimetric analysis (TGA). (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

show abstract

“…This confirms that the crystal belongs to orthorhombic system with space group Pmn21. The cell dimensions agree with reported values [17,18,26].…”

Section: Resultssupporting

confidence: 89%

“…The SHG efficiency of BTCC is 0.73 times higher than urea [17]. It also ____________________ possesses good mechanical properties which are comparable with KDP [18].…”

Section: Introductionmentioning

confidence: 97%

Growth and characterization of glycine doped bis thiourea cadmium chloride single crystal

Dhumane

Hussaini

Dongre

et al. 2009

Cryst. Res. Technol.

View full text Add to dashboard Cite

show abstract

“…Hardness value is found to increase with load. Similar hardness behaviour is exhibited by BTCC also [16]. Dielectric studies The sample is prepared and mounted between the copper platforms and electrodes.…”

Section: Characterizationmentioning

confidence: 70%

Growth and characterization of dichloro tetrakis thiourea nickel single crystals

Ambujam¹,

Thomas²,

Aruna³

et al. 2006

Cryst. Res. Technol.

View full text Add to dashboard Cite

Thiourea has a large dipole moment and has an ability to form extensive network of hydrogen bonds. In the course of our studies on new semiorganic NLO materials, thiourea is selected to combine with nickel chloride. Single crystals of tetrakis thiourea nickel chloride are grown using silica gel. Green transparent crystals of NTC (nickel thiourea chloride) of dimension 8x4x3 mm 3 are grown in a period of 45 days. Single crystal XRD shows that the crystal belongs to body centered tetragonal symmetry class I4. The UV-Vis-NIR spectrum establishes the transmission range to be 300 nm to 2500 nm, with a sharp absorption peak at the red end of the visible region, which is due to the colour of the crystal. Photoconductivity and dielectric studies are also carried out. The mechanical strength of the crystal is estimated by Vickers hardness test. The crystal starts decomposing after about 200°C. Thus, we confirm from our present investigation that NTC is a suitable candidate for NLO applications.

show abstract

“…According to Onitsch [19] if n > 2, then microhardness number Hv increases with increasing load. Another well known material with this behaviour is BTCC [20]. The relatively high value of work hardening coefficient for γ-glycine proves the high mechanical strength of the grown γ-glycine crystal.…”

Section: Characterizationmentioning

confidence: 94%

Crystal growth, optical, mechanical and electrical properties of organic NLO material γ-glycine

Ambujam¹,

Selvakumar²,

Anand³

et al. 2006

Cryst. Res. Technol.

View full text Add to dashboard Cite

Single crystals of organic non-linear optical material, γ-glycine have been grown by gel method for the first time. The γ -phase is confirmed by single crystal XRD. The presence of various functional groups of γ-glycine are confirmed by FTIR. The UV-Vis-NIR spectrum reveals the high percentage of transmission of the sample in the entire visible region. The SHG of γ-glycine is confirmed by Kurtz powder technique. TGA-DTA studies indicate that the crystal is structurally stable upto 170 o C. Microhardness investigations are conducted on the grown crystals. The dielectric constant measurements are carried out and the nature of variation of dielectric constant ε΄ and dielectric loss D in the frequency range of 50 Hz to 5 MHz is studied and reported. Photoconductivity studies of γ-glycine crystals revealed the negative photoconducting nature.

show abstract

Structural and microhardness studies of a NLO material–bisthiourea cadmium chloride

Cited by 53 publications

References 13 publications

Growth and characterization of glycine doped bis thiourea cadmium chloride single crystal

Growth and characterization of glycine doped bis thiourea cadmium chloride single crystal

Growth and characterization of dichloro tetrakis thiourea nickel single crystals

Crystal growth, optical, mechanical and electrical properties of organic NLO material γ-glycine

Contact Info

Product

Resources

About