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DC Field | Value | Language |
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dc.contributor.author | Glot, AB | - |
dc.contributor.author | Mazurik, SV | - |
dc.contributor.author | Jones, BJ | - |
dc.contributor.author | Bondarchuk, AN | - |
dc.contributor.author | Bulpett, R | - |
dc.contributor.author | Verma, N | - |
dc.date.accessioned | 2009-11-12T09:18:25Z | - |
dc.date.available | 2009-11-12T09:18:25Z | - |
dc.date.issued | 2009 | - |
dc.identifier.citation | Journal of the European Ceramic Society. 30 (2010) 539–544 | en |
dc.identifier.issn | 0955-2219 | - |
dc.identifier.other | http://dx.doi.org/10.1016/j.jeurceramsoc.2009.06.033 | - |
dc.identifier.uri | http://bura.brunel.ac.uk/handle/2438/3834 | - |
dc.description.abstract | Indium oxide based ceramics with bismuth oxide addition were sintered in air in the temperature range 800-1300 ºC. Current-voltage characteristics of In2O3-Bi2O3 ceramics sintered at different temperatures are weakly nonlinear. After an additional heat treatment in air at about 200 ºC samples sintered at a temperature within the narrow range of about 1050-1100 ºC exhibit a current-limiting effect accompanied by low-frequency current oscillations. It is shown that the observed electrical properties are controlled by the grain-boundary barriers and the heat treatment in air at 200 ºC leads to the decrease in the barrier height. Electrical measurements, scanning electron microscopy and X-ray photoelectron spectroscopy results suggest that the current-limiting effect observed in In2O3-Bi2O3 may be explained in terms of a modified barrier model; the observed current-limiting effect is the result of an increase of barrier height with increasing electric field, due to additional oxygen absorption. It is found that In2O3-Bi2O3-Co3O4-Cr2O3 ceramic exhibits current-voltage characteristics with negative differential resistance due to Joule micro heating. | en |
dc.description.sponsorship | This study was performed in part in the frames of the project SEP-2003-C02-42821, CONACYT, México. Funding from the Royal Society, United Kingdom (2007R1/R26999) is gratefully acknowledged. | en |
dc.language.iso | en | en |
dc.publisher | Elsevier | en |
dc.relation.ispartof | Experimental Techniques Centre (ETC) | - |
dc.subject | Electroceramics | en |
dc.subject | Ceramics | en |
dc.subject | Sintering | en |
dc.subject | Grain boundaries | en |
dc.subject | Electrical properties | en |
dc.subject | Varistors | en |
dc.subject | Indium oxide | en |
dc.subject | Bismuth oxide | en |
dc.title | Current limiting and negative differential resistance in indium oxide based ceramics | en |
dc.type | Research Paper | en |
Appears in Collections: | Materials Engineering The Experimental Techniques Centre |
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File | Description | Size | Format | |
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InGlot-BJJ-JECS-archive.pdf | 451.65 kB | Adobe PDF | View/Open |
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