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Thermal and dielectric studies on binary organic system: benzil–m-nitroaniline

Rai, RN and Varma, KBR (2001) Thermal and dielectric studies on binary organic system: benzil–m-nitroaniline. In: Materials Letters, 48 (6). pp. 356-361.

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A simple eutectic type phase diagram has been established between benzil and m-nitroaniline (m-NA) system. Enthalpy of mixing, solid–liquid interfacial energy, entropy of fusion and excess thermodynamic functions were calculated based on enthalpy of fusion values, determined by the DSC method. The studies concerning the X-ray powder diffraction and the infrared spectroscopy reveal the composite nature of the eutectic and 5 mol% m-NA added benzil. The dielectric constants of eutectic, 5 mol% m-NA added benzil and parent components decrease with increase in frequency (1 kHz–10 MHz) at 27°C. The dielectric constant values of these composites lie between those of m-NA and benzil. The second harmonic generation efficiencies (measured using Kurtz's powder technique) of the hot-pressed composite samples are less than that of pure m-NA.

Item Type: Journal Article
Publication: Materials Letters
Publisher: Elsevier
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: Solid–liquid phase equilibria;Dielectric constant;Crystal growth;Hot-pressing;SHG efficiency;Benzil–m-nitroaniline
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 30 Mar 2007
Last Modified: 19 Sep 2010 04:36
URI: http://eprints.iisc.ac.in/id/eprint/10519

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