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Low Temperature Synthesis of Nano-Crystalline CaCu3Ti4O12 Through aFuel Mediated Auto-Combustion Pathway

Banerjee, Nirupam and Krupanidhi, SB (2010) Low Temperature Synthesis of Nano-Crystalline CaCu3Ti4O12 Through aFuel Mediated Auto-Combustion Pathway. In: Current Nanoscience, 6 (4). pp. 432-438.

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Official URL: http://www.ingentaconnect.com/content/ben/cnano/20...

Abstract

A novel, cost effective,environment-friendly and energetically beneficial alternative method for the synthesis of giant dielectric pseudo-perovskite material CaCu3Ti4O12 (CCTO) is presented. The method involved auto-combustion of an aqueous precursor solution in oxygen atmosphere with the help of external fuels and is capable of producing high amount of CCTO at ultra-low temperature, in the combustion residue itself. The amount of phase generated was observed to be highly dependent on the combustion process i.e. on the nature and amount of external-fuels added for combustion. Two successful fuel combinations capable of producing reasonably higher amount of the desired compound were investigated. On a structural characterization grain size was observed to decrease drastically to nano-dimension compared to submicron-size that was obtained in a traditional sol-gel combustion and subsequent cacination method. Therefore, the method reported can produce nano-crystalline CaCu3Ti4O12 ceramic matrix at an ultra-low temperature and is expected to be applicable for other multifunctional perovskite oxide materials.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Bentham Science Publishers.
Keywords: Dielectric material;solution combustion;nano-crystalline perovskites
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 30 Aug 2010 10:37
Last Modified: 30 Aug 2010 10:37
URI: http://eprints.iisc.ernet.in/id/eprint/31337

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