Halder, N and Chattopadhyay, D and Das Sharma, A and Saha, D and Sen, Amarnath and Maiti, Himadri Sekhar (2001) Effect of sintering atmosphere on the dielectric properties of barium titanate based capacitors. Materials Research Bulletin, 36 (5-6). 905 -913. ISSN 0025-5408

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It has been found that BaTiO3 based capacitor compositions containing lithium tetraborate (Aux! and bismuth oxide (flux and Curie peak suppressor) can be fired in an inert (argon) atmosphere without sacrificing densification. However, the inert atmosphere firing can lead to a dramatic increase of both the dielectric constant and dissipation faster of the samples containing bismuth oxide which can be suppressed by adding a small amount of manganese dioxide in the compositions. The temperature coefficient of capacitance of such samples shows the desirable flattened response when fired in argon atmosphere. The observations have been explained by considering the formation of defects at elevated temperatures in bismuth containing samples when fired in an inert atmosphere

Item Type: Article
Uncontrolled Keywords: oxides; electronic materials; dielectric properties; ferroelectricity; defects
Subjects: Ceramic-Metal Systems
Divisions: Non-Oxide Ceramics & Composites
Depositing User: Mrs Chandana Patra
Date Deposited: 09 Mar 2012 08:09
Last Modified: 15 May 2016 13:25
URI: http://cgcri.csircentral.net/id/eprint/1194

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