|
Crystal Research and Technology |
Cryst. Res. Technol. 42, 948 (2007) - Abstract -
Growth and characterization of pure and doped nonlinear optical l-arginine acetate single crystals
M. Gulam Mohamed, M. Vimalan*, J. G. M. Jesudurai*, J. Madhavan*, and P. Sagayaraj*
Department of physics, The New College, Chennai - 600 014. India
*Department of physics, Loyola College, Chennai- 600 034, India
Single crystals of organic nonlinear optical material of pure, Cu2+ and Mg2+ doped L-arginine acetate (LAA) were successfully grown by slow evaporation method at room temperature. The UV-Vis-NIR spectra of pure and doped LAA indicate that these crystals possess a wide optical transmission window from 240-1600 nm. Non-linear optical studies reveal that the SHG efficiency of LAA is nearly three times that of KDP. The dielectric response of the samples was studied in the frequency region 100 Hz to 2 MHz and the influence of Cu2+ and Mg2+ substitution on the dielectric behaviour had been investigated. Photoconductivity study proves that both pure and Cu2+ and Mg2+ doped LAA crystal exhibit positive photoconductivity. It is evident from the Vickers hardness study that the hardness of the crystal decreases with increasing load both for pure and doped samples. ESR studies confirmed the incorporation of Cu2+ into LAA and the value of g-factor was found to be 2.1654.
If you have come directly to this page, click this symbol 
to go to the CRT homepage.
The full text of this paper in pdf-Format is available at Wiley Interscience.