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Synthesis of Eu3+-doped BaBi2Ta2O9 based glass-ceramic nanocomposites: Optical and dielectric properties

IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata


Field	Value

Title	Synthesis of Eu3+-doped BaBi2Ta2O9 based glass-ceramic nanocomposites: Optical and dielectric properties

Creator	Chakrabarti, Anirban Tarafder, Anal Molla, Atiar Rahaman

Subject	Glass

Description	In this paper we report for the first time synthesis of Eu3+-doped transparent glass-ceramics (TGC) with BaBi2Ta2O9 (BBT) as the major crystal phase using the glass system SiO2-K2O-BaO-Bi2O3-Ta2O5 by melt quenching technique followed by controlled crystallization through ceramming heat treatment. DSC studies were conducted in order to determine a novel heat-treatment protocol to attain transparent GCs by controlling crystal growth. The structural properties of the BBT GCs have been investigated using XRD, FE-SEM, TEM and FTIR reflectance spectroscopy. Optical band gap energies of the glass-ceramic samples were found to decrease with respect to the precursor glass. An increased intensity of emission along with increase in the average lifetime of Eu3+ was observed due to incorporation of Eu3+ ions into the low-phonon energy BBT crystal site. The local field asymmetric ratios of all the samples were observed greater than unity. The dielectric constant (epsilon(r)), dielectric loss, and dissipation factor values of both the base glass and ceramized samples were found to decrease with increase in frequency.

Publisher	Wiely / American Ceramic Society

Date	2018-01

Type	Article PeerReviewed

Format	application/pdf

Identifier	http://cgcri.csircentral.net/4372/1/anal.pdf Chakrabarti, Anirban and Tarafder, Anal and Molla, Atiar Rahaman (2018) Synthesis of Eu3+-doped BaBi2Ta2O9 based glass-ceramic nanocomposites: Optical and dielectric properties. Journal of the American Ceramic Society, 101 (1). pp. 231-243. ISSN 0002-7820

Relation	http://cgcri.csircentral.net/4372/