Artículo

The influence of yttrium on a typical SnO2 varistor system: Microstructural and electrical features

Parra, RodrigoIcon ; Maniette, Y.; Varela, J. A.; Castro, Miriam SusanaIcon
Fecha de publicación: 10/05/2005
Editorial: Elsevier
Revista: Materials Chemistry and Physics
ISSN: 0254-0584
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:

Resumen

The influence of yttrium oxide, Y2O3, on the microstructure development of the SnO2·Co3O4·Nb2O5 typical varistor system was studied with scanning (SEM) and transmission (TEM) electron microscopies. The different phases present in the studied samples were characterized through XRD, EDS and selected area diffraction patterns (SAD). Particles of Co2SnO4 were observed with TEM in every sample, whereas clusters of the pyrochlore phaseY2Sn2O7 were observed with SEM in samples with 0.05, 0.10 and 0.25 mol% ofY2O3. The higher non-linearity (α = 16) was achieved with the addition of 0.05 mol% of Y2O3. The influence of the secondary phases on the electrical properties is also addressed in this work.
Palabras clave: Varistors , Electron Microscopy , Electrical Properties , Sno2
 
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/29523
URL: http://www.sciencedirect.com/science/article/pii/S0254058405003044
DOI: http://dx.doi.org/10.1016/j.matchemphys.2005.05.014
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Articulos(INTEMA)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)
Citación
Parra, Rodrigo; Maniette, Y.; Varela, J. A.; Castro, Miriam Susana; The influence of yttrium on a typical SnO2 varistor system: Microstructural and electrical features; Elsevier; Materials Chemistry and Physics; 94; 2-3; 10-5-2005; 347-352
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