Eur. Phys. J. Appl. Phys.
Volume 64, Number 2, November 2013
|Number of page(s)||4|
|Section||Physics of Organic Materials and Devices|
|Published online||15 November 2013|
Growth and characterization of urea-oxalic acid crystals by solution growth technique
Department of Physics, Dhanalakshmi College of Engineering, 601301 Chennai, India
2 Department of Physics, Loyola College, 600034 Chennai, India
3 Department of Physics, B.S. Abdur Rahman University, 600048 Chennai, India
4 Department of Chemistry, Dhanalakshmi College of Engineering, 601301 Chennai, India
a e-mail: firstname.lastname@example.org
Revised: 5 September 2013
Accepted: 6 September 2013
Published online: 15 November 2013
Single crystals of urea-oxalic acid (UOA) have been grown from aqueous solution by slow evaporation technique. Single crystal X-ray diffraction analysis confirmed that the grown crystals belong to monoclinic system having space group P21/C. The presence of functional groups was confirmed by using Fourier transform infrared (FTIR) spectroscopy. Optical absorption studies show very low absorption in entire visible region and the UV cut-off is found to be around 240 nm. Thermal analysis studies were carried out using TG/DTA analysis and the grown crystal is thermally stable up to 180 °C. Dielectric constant studies confirm the ferroelectric property of the materials and very low dielectric loss reveals very high purity of the crystal.
© EDP Sciences, 2013
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