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Structural and dielectric characteristics of Bi2O3-TiO2-SrB4O7 glasses

Varma, KBR and Shankar, MV (2002) Structural and dielectric characteristics of Bi2O3-TiO2-SrB4O7 glasses. In: 10th IEEE International Symposium on Applications of Ferroelectrics (ISAF 96), 18-21 Aug 1996, East Brunswick, NJ , USA.

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Abstract

Glasses of the composition 0.20 Bi2O3 - 0.30 TiO2 - 0.50 SrB4O7 and 0.30 Bi2O3 - 0.45 TiO2 - 0.25 SrB4O7 have been fabricated by conventional glass processing technique. These glasses have been characterized using X-ray powder diffraction (XRD), differential thermal analysis (DTA) and high resolution transmission electron microscopy (HRTEM). The frequency response of the dielectric constant and the loss tangent of these glasses has been studied. The formation of the crystalline bismuth titanate, Bi4Ti3O12 (BiT) phase in the heat treated samples has been confirmed by XRD and HRTEM studies. The measured ET Of the glass-ceramics are found to be in good agreement with those predicted by the logarithmic mixture rule. Optical second harmonic generation (SHG) at 1064 nm has been observed in the heat treated samples and is attributed to the formation of crystalline Bi4Ti3O12 (BiT) phase in the SrB4O7 (SBO) matrix.

Item Type: Conference Paper
Additional Information: Copyright 1996 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 15 Mar 2012 09:07
Last Modified: 15 Mar 2012 09:07
URI: http://eprints.iisc.ernet.in/id/eprint/43964

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