Mohd. , Shakir and V. , Ganesh and Wahab, M. A. and G. , Bhagavannarayana and Rao, K. Kishan (2010) Structural, optical and mechanical studies on pure and Mn2+ doped l-asparagine monohydrate single crystals. Materials Science and Engineering: B , 172 (1). pp. 9-14. ISSN 0921-5107

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Abstract

Pure and 1, 1.5 and 2 mol% Mn2+ doped l-asparagine monohydrate (MLA) single crystals have been successfully grown from aqueous solutions by slow cooling method. Powder X-ray diffraction (XRD) patterns and FT-Raman spectra have been recorded to study the variation in the lattice parameters and functional groups with doping concentrations respectively. The influence of doping on optical transparency and laser damage threshold (LDT) was investigated for these crystals. Vickers microhardness tests in the load range of 10–100 g were carried out on (0 1 1) face of pure and doped MLA crystals and the different regions in the load variation of hardness have been discussed. Some hardness related parameters viz., crack length, fracture toughness and brittle index number of pure as well as doped single crystals have been studied.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier B.V.
Uncontrolled Keywords:	X-ray diffraction; Optical properties; Microhardness; Fracture toughness
Subjects:	Materials Science Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	12 Jul 2012 07:26
Last Modified:	12 Jul 2012 07:26
URI:	http://npl.csircentral.net/id/eprint/331

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