Journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 84, Issue 4, Pages 759-766Publisher
AMER CERAMIC SOC
DOI: 10.1111/j.1151-2916.2001.tb00738.x
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The purpose of the present investigation is to describe the influence of the processing parameters on the dielectric behavior of manganese-doped Ba(Ti1-xZrx)O-3 ceramics, particularly variations in the small-signal aging rate, temperature characteristic, and hysteresis. In this paper, the aging behavior of base-metal electrode materials above the temperature of the permittivity maximum (T-M), including the influence of the zirconium content and annealing conditions, is described for the first time. The aging rate at temperatures greater than T-M decreases as the oxygen partial pressure increases during annealing and the zirconium content increases, whereas the aging rate exhibits a maximum at temperatures much less than T-M. The behavior is explained in terms of a diffuse phase transition, Hysteresis-loop deformation is observed during aging.
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