Bordeneuve, Hélène and Guillemet-Fritsch, Sophie and Rousset, Abel and Schuurman, Sophie and Poulain, Véronique Structure and electrical properties of single-phase cobalt manganese oxide spinels Mn3xCoxO4 sintered classically and by spark plasma sintering(SPS). (2009) Journal of Solid State Chemistry, 182 (2). 396-401. ISSN 0022-4596
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(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 397kB |
Official URL: http://dx.doi.org/10.1016/j.jssc.2008.11.004
Abstract
Cobalt manganeseoxidespinelsMn3xCoxO4 (with 0.98pxp3) werepreparedbythethermal decompositioninairofoxalateprecursors.Theinfluenceofthethermaltreatmentsonthestructure of thesematerialsisemphasized.Single-phaseceramicswereobtainedafteroptimizationofthe sintering parameters.AprecisephasediagramfortheCo–Mn–Osystemisproposedaccordingto thermalstabilityandstructureofoxidepowders.Theelectricalmeasurementsonsingle-phaseceramics show thatlowvaluesofresistivitycanbeachieved.Theconductioncouldtakeplacethroughjumpsof polarons betweenMn3+ and Mn4+ on octahedralsites.Thesecompoundspresentinterestingelectrical characteristics fornegativetemperaturecoefficient(NTC)thermistorapplications.
| Item Type: | Article |
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| Additional Information: | Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Journal of Solid State Chemistry website : http://www.sciencedirect.com/science/journal/00224596 |
| Audience (journal): | International peer-reviewed journal |
| Uncontrolled Keywords: | |
| Institution: | French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) |
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| Statistics: | download |
| Deposited On: | 15 Jun 2010 15:31 |
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