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Descripción
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| Abstract: this work a comparative Study of undoped CaCU3Ti4O12 (CCTO) and doped with Fe3+ (CCTOF) and Nb5+ (CCTON) ceramics, was aimed to modify the electronic transport. XRD patterns, FE-SEM microstructural analysis, impedance spectroscopy and I-V response curves were afforded to correlate the microstructure with the nonlinear I-V behaviour. The appearance of nonlinear behaviour in doped CCTO samples has been correlated with the ceramic microstructure that consists in n-type semiconductor grains, surrounded by a grain boundary phase based on CuO. The presence C of this secondary grain boundary phase is the responsible of the assisted liquid phase sintering in CCTO ceramics. Doped samples showed cleaner grain boundaries than CCTO and nonfinearity in the I-V response. (c) 2007 Elsevier Ltd. All rights reserved | |
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Internacional
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Si |
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JCR del ISI
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Si |
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Título de la revista
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J EUR CERAM SOC |
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ISSN
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0955-2219 |
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Factor de impacto JCR
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1,562 |
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Información de impacto
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Volumen
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27 |
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DOI
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Número de revista
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13 |
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Desde la página
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3901 |
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Hasta la página
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3905 |
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SIN MES |
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Ranking
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