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The variation of current with time, passing through single crystals of barium titanate (BaTiO 3 ) which have been heated in an oxygen atmosphere has been studied. It is shown that the time dependence which occurs at a critical field is closely associated with gold anodes. It is suggested that the observed apparent enhancement of time dependence is due to chemisorbed oxygen and a model is proposed to account for the carrier injection mechanism.
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Reji Thomas (1970) studied this question.
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