Pandian, M. Senthil and Balamurugan, N. and Bhagavannarayana, G. and Ramasamy, P. (2008) Characterization of 〈0 1 0〉 directed KAP single crystals grown by Sankaranarayanan–Ramasamy (SR) method. Journal of Crystal Growth, 310 (18). pp. 4143-4147. ISSN 0022-0248

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Abstract

Single crystals of potassium acid phthalate (KAP), a semi-organic compound, have been grown at an average growth rate of 4 mm/day from aqueous solution by using the uniaxial crystal growth method of Sankaranarayanan–Ramasamy (SR). Transparent, cylindrical KAP crystal of size 70 mm length and 15 mm diameter was grown. The grown crystals were characterized by etching and UV–vis NIR analysis. HRXRD analysis indicates that the crystalline perfection of SR method-grown KAP is good. The KAP crystals grown by SR method have 9% higher transmittance than conventional method-grown crystal. The microhardness test was carried out on the (0 1 0) face and a load-dependent hardness was observed. TG–DTA evaluated the thermal properties of the grown crystal. KAP was found to be thermally stable up to 290 °C. The dielectric constant and dielectric loss of the crystal were studied as function of frequency and temperature.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/S Elsevier B.V.
Uncontrolled Keywords:	Specific orientation; Growth from solutions; Single-crystal growth
Subjects:	Crystallography Materials Science Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	15 Jan 2013 07:43
Last Modified:	15 Jan 2013 07:43
URI:	http://npl.csircentral.net/id/eprint/953

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