2000
DOI: 10.1016/s0272-8842(99)00052-8
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Conduction mechanism of barium titanate ceramics

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Cited by 45 publications
(24 citation statements)
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“…The barrier height has been calculated over the full temperature range beyond the T C . It can be observed that the barrier height does not become constant, as has been assumed by some workers [24,25], rather it continues to increase up to the highest of temperature which is 560 K in this case. This behavior is not expected to lead to a NTCR region.…”
Section: Resultssupporting
confidence: 63%
See 1 more Smart Citation
“…The barrier height has been calculated over the full temperature range beyond the T C . It can be observed that the barrier height does not become constant, as has been assumed by some workers [24,25], rather it continues to increase up to the highest of temperature which is 560 K in this case. This behavior is not expected to lead to a NTCR region.…”
Section: Resultssupporting
confidence: 63%
“…This Negative Temperature Coefficient of Resistance (NTCR) has been observed and explained by many workers. Brzozowski and Castro [24], take the view that on cooling from the sintering temperature, a non-uniform defect concentration is created near the grain surfaces. This determines the donor concentration profile near the grain surfaces and consequently the "width and the steepness" of the barriers at the grain boundaries.…”
Section: Resultsmentioning
confidence: 99%
“…Some researchers have found that the resistivity/time relationship at high temperature continuous load test is different from that of room temperature ageing, and the resistance/temperature characteristics of aged samples are also different from those of reduced or oxidized samples. [5][6][7][8] Therefore, a mechanism involving a combination of internal oxidation and reduction reactions was proposed for the ageing characteristics of donor-doped BaTiO 3 . 8 In the present paper we report some recent results on the single-dopant doped BaTiO 3 ceramics aged at 100 and 150 • C in air.…”
Section: Introductionmentioning
confidence: 99%
“…Además, en estas muestras se registraron granos de gran tamaño, que favorecen la formación de dominios ferroeléctricos. Estos dominios, a temperaturas menores que la temperatura de Curie, cancelan las barreras de potencial situadas en los bordes de grano, produciendo un descenso en la resistividad del material (16).…”
Section: Resultados Y Discusiónunclassified