TITLE

Neutron radiation effects on the nonlinear current–voltage characteristics of ilmenite-hematite ceramics

AUTHOR(S)
Padmini, P.; Pulikkathara, M.; Wilkins, R.; Pandey, R. K.
PUB. DATE
January 2003
SOURCE
Applied Physics Letters;1/27/2003, Vol. 82 Issue 4, p586
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Ilmenite-hematite (IH) is a wide-band gap semiconducting material with a potential for low-voltage varistor applications. The nonlinear characteristics of this material were investigated before and after exposure to high-energy neutron radiation. The typical current-voltage characteristics of a varistor device are retained in all our samples subjected to neutron radiation. However, the effect is more pronounced on the device parameters like the nonlinear coefficient (α) and switching field (E[sub s]). The crystallinity of the ceramic remains unaffected after irradiation. Our observations confirm that IH-based varistor devices can perform satisfactorily even in radiation dominant environments such as in space and nuclear reactors.
ACCESSION #
8954570

 

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