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https://open.uns.ac.rs/handle/123456789/9127
Назив: | Preparation and characterization of Cu and Zn modified nickel manganite NTC powders and thick film thermistors | Аутори: | Aleksic O. Nikolić, M. Lukovic M. Nikolić, N. Radojcic B. Radovanović, Milan Djuric Z. Mitric M. Nikolic P. |
Датум издавања: | 20-феб-2013 | Часопис: | Materials Science and Engineering B: Solid-State Materials for Advanced Technology | Сажетак: | A simple ball milling/thermal treatment procedure was applied to obtain fine thermistor powders. Three different powder compositions were analyzed-Cu0.2Ni0.5Zn1.0Mn1.3O 4, Cu0.25Ni0.5Zn1.0Mn 1.25O4 and Cu0.4Ni0.5Mn 2.1O4. XRD analysis showed that all three powder compositions had a cubic spinel structure. Correlation between the sintering temperature, structure and resulting electrical properties was analyzed on bulk samples. Thick film pastes were composed and segmented thick film thermistors were screen printed on alumina, dried and fired. SEM analysis revealed a typical dendrite structure with small grains and a developed surface area. Thick film sheet resistance was measured on a test matrix and the resistance decreased with increasing Cu content. The temperature dependence of sample resistance was measured in a climatic chamber enabling calculation of the material constant and activation energy. Aging of the obtained segmented thermistors was analyzed and the resistivity drift was 0.23% for the Cu0.2Ni0.5Zn 1.0Mn1.3O4 NTC thick film thermistor confirming greater stability of thermistors containing Zn and Cu that in combination with the determined good thermistor characteristics make them good candidates for temperature and heat loss sensor applications. © 2012 Elsevier B.V. | URI: | https://open.uns.ac.rs/handle/123456789/9127 | ISSN: | 09215107 | DOI: | 10.1016/j.mseb.2012.11.003 |
Налази се у колекцијама: | FTN Publikacije/Publications |
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