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Electrical properties and ageing characteristics of BaTiO3 ceramics doped by single dopants
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Ceramics.
2005 (English)In: Journal of the European Ceramic Society, ISSN 0955-2219, E-ISSN 1873-619X, Vol. 25, no 4, 441-445 p.Article in journal (Refereed) Published
Abstract [en]

BaTiO3 ceramics doped by single dopants Of SM2O3, Ho2O3, Bi2O3, La2O3, CeO2 and Ta2O5, respectively, were prepared and aged in air. The room-temperature resistivity was measured and the relationship between resistivity change versus ageing time was determined. The electrical resistivity of Bi- and Ta-doped samples decreases at the early ageing stage, and then increases with the ageing time; the other doped ceramics display a monotonous increase of the resistivity with ageing time. The electrical properties and ageing characteristics are analyzed by considering interior oxidation and reduction reactions and the electronegativity of the doping elements.

Place, publisher, year, edition, pages
2005. Vol. 25, no 4, 441-445 p.
Keyword [en]
BaTiO3, electrical properties, ageing, barium-titanate, ptcr
Identifiers
URN: urn:nbn:se:kth:diva-14525DOI: 10.1016/j.jeurceramsoc.2004.03.012ISI: 000226924100016Scopus ID: 2-s2.0-10944263185OAI: oai:DiVA.org:kth-14525DiVA: diva2:332566
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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