Fabrication of Transparent BaNaB9O15 Glass-Microcrystal Composites

Vaish, Rahul and Varma, KBR (2012) Fabrication of Transparent BaNaB9O15 Glass-Microcrystal Composites. In: JOURNAL OF ELECTRONIC MATERIALS, 41 (7). pp. 1996-2000.

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Abstract

Transparent glasses in the BaO-Na2O-B2O3 (BNBO) system were fabricated via the conventional melt-quenching technique. The amorphous and the glassy nature of the as-quenched samples were confirmed by x-ray powder diffraction (XRD) and differential thermal analysis (DTA), respectively. Cyclic heat treatment of the as-quenched glasses yielded transparent glass-microcrystal composites. The volume fraction of the crystallites and their sizes could be easily controlled by this process. Heat-treated samples were highly transparent owing to the minimum mismatch between the refractive indices of the crystallites and the glass residual matrix. BNBO samples that were heat treated at 540A degrees C for 4 h for 10 cycles were found to be 60% to 70% transparent in the 500 nm to 900 nm wavelength range.

Item Type:	Journal Article
Publication:	JOURNAL OF ELECTRONIC MATERIALS
Publisher:	SPRINGER
Additional Information:	Copyright for this article belongs to Springer
Keywords:	Borate;glasses;transparent;microcrystal
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	28 Jun 2012 07:37
Last Modified:	28 Jun 2012 07:37
URI:	http://eprints.iisc.ac.in/id/eprint/44731

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