Effect of Mg substitution on microstructure and electrical properties of Mn Ni Co Mg O (0 ≤ x ≤ 1) NTC ceramics
Journal of Materials Science: Materials in Electronics, ISSN: 0957-4522, Vol: 23, Issue: 4, Page: 851-857
2012
- 24Citations
- 9Captures
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Article Description
The NTC thermistors based on spinel-type semiconducting electroceramics with compositions Mn Ni Co Mg O (0 ≤ x ≤ 1) were synthesized by solid-state method. The influences of Mg content on the Mn Ni Co Mg O materials were investigated by laser particle size analyzer, XRD, SEM, EDS and electrical measurements, respectively. The experiment results show that the substituted Mg suppresses the separation of NiO phase. Both the grain size and density decrease as the amount of Mg content in Mn Ni Co Mg O samples increases. In particular, the substituted Mg leads to a decrease in the resistance drift of the Mn Ni Co Mg O NTC ceramics after aging test. This indicates that the Mg substituted Mn Ni Co Mg O NTC ceramics display high electrical stability in comparison with the Mg-free Mn Ni Co1.0O ceramics. © Springer Science+Business Media, LLC 2011.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84861909174&origin=inward; http://dx.doi.org/10.1007/s10854-011-0505-8; http://link.springer.com/10.1007/s10854-011-0505-8; http://link.springer.com/content/pdf/10.1007/s10854-011-0505-8; http://link.springer.com/content/pdf/10.1007/s10854-011-0505-8.pdf; http://link.springer.com/article/10.1007/s10854-011-0505-8/fulltext.html; https://dx.doi.org/10.1007/s10854-011-0505-8; https://link.springer.com/article/10.1007/s10854-011-0505-8; http://www.springerlink.com/index/10.1007/s10854-011-0505-8; http://www.springerlink.com/index/pdf/10.1007/s10854-011-0505-8
Springer Science and Business Media LLC
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