Descripción
|
|
---|---|
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 | |
Internacional
|
Si |
JCR del ISI
|
Si |
Título de la revista
|
J EUR CERAM SOC |
ISSN
|
0955-2219 |
Factor de impacto JCR
|
1,562 |
Información de impacto
|
|
Volumen
|
27 |
DOI
|
|
Número de revista
|
13 |
Desde la página
|
3901 |
Hasta la página
|
3905 |
Mes
|
SIN MES |
Ranking
|