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Zinc oxide ceramic varistors formulated with barium orthosilicate for operation in the 3- 15 V battery range

Kutty, TRN and Ezhilvalavan, S (1996) Zinc oxide ceramic varistors formulated with barium orthosilicate for operation in the 3- 15 V battery range. In: Materials Letters, 27 (6). pp. 355-361.

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Abstract

Vatistors working in the 3-15 V battery voltage range can be obtained from ZnO ceramics formulated with $Ba_2SiO_4$ as the extra additive. The presence of a large surface state density and a changing pattern of trap states at the grain boundary interfaces are more significant than large grain size in attaining lower breakdown voltages, yet preserving higher nonlinear coefficients (\alpha) up to 25.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: Low voltage varistors;ZnO ceramics;Grain boundaries;Surface states
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 25 Jan 2007
Last Modified: 19 Sep 2010 04:34
URI: http://eprints.iisc.ernet.in/id/eprint/9403

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