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Size effect on properties of varistors made from zinc oxide nanoparticles through low temperature spark plasma sintering

Saint Macary, Léna and Kahn, Myrtil L. and Estournès, Claude and Fau, Pierre and Trémouilles, David and Bafleur, Marise and Renaud, Philippe and Chaudret, Bruno Size effect on properties of varistors made from zinc oxide nanoparticles through low temperature spark plasma sintering. (2009) Advanced Functional Materials, vol. 19 (n° 11). pp. 1775-1783. ISSN 1616-301X

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Official URL: http://dx.doi.org/10.1002/adfm.200801067

Abstract

Conditions for the elaboration of nanostructured varistors by spark plasma sintering (SPS) are investigated, using 8-nm zinc oxide nanoparticles synthesized following an organometallic approach. A binary system constituted of zinc oxide and bismuth oxide nanoparticles is used for this purpose. It is synthesized at roomtemperature in an organic solution through the hydrolysis of dicyclohexylzinc and bismuth acetate precursors. Sintering of this material is performed by SPS at various temperatures and dwell times. The determination of the microstructure and the chemical composition of the as-prepared ceramics are based on scanning electron microscopy and X-ray diffraction analysis. The nonlinear electrical characteristics are evidenced by current–voltage measurements. The breakdown voltage of these nanostructured varistors strongly depends on grain sizes. The results show that nanostructured varistors are obtained by SPS at sintering temperatures ranging from 550 to 600 8C.

Item Type:Article
Additional Information:Thanks to John Wiley & Sons editor. The definitive version is available at http://www3.interscience.wiley.com/ The original PDF of the article can be found at Advanced Functional Materials website : http://www3.interscience.wiley.com/journal/122310491/abstract?CRETRY=1&SRETRY=0
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Université de Toulouse > Université de Toulouse II-Le Mirail - UTM
Université de Toulouse > Université de Toulouse I-Sciences Sociales - UT1
Other partners > Freescale Semiconductor (FRANCE)
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Deposited By: Nihad Lahdifi
Deposited On:22 Feb 2011 12:14

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