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Growth and characterization of urea-oxalic acid crystals by solution growth technique

Published online by Cambridge University Press:  15 November 2013

V. Chithambaram ,
S. Jerome Das ,
Sivakumar Krishnan ,
M. Basheer Ahamed  and
R. Arivudai Nambi
V. Chithambaram
Affiliation:
Department of Physics, Dhanalakshmi College of Engineering, 601301 Chennai, India
S. Jerome Das
Affiliation:
Department of Physics, Loyola College, 600034 Chennai, India
Sivakumar Krishnan*
Affiliation:
Department of Physics, B.S. Abdur Rahman University, 600048 Chennai, India
M. Basheer Ahamed
Affiliation:
Department of Physics, B.S. Abdur Rahman University, 600048 Chennai, India
R. Arivudai Nambi
Affiliation:
Department of Chemistry, Dhanalakshmi College of Engineering, 601301 Chennai, India
*
ae-mail: skrishnanjp@gmail.com
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Abstract

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.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 64 , Issue 2 , November 2013 , 20201
Copyright
© EDP Sciences, 2013

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