Effect of Nb-doping on phase transitions and selected properties of (Ba0.90Pb0.10)TiO3 ceramics

Dielectric, pyroelectric characteristics as well as the changes of electric conductivity were investigated for Nb 2 O 5 -doped (Ba 0.90 Pb 0.10 )TiO 3 ceramics. The influence of this dopant on the ceramic microstructure and the lattice parameters were also studied. The analysis of the results of ele...

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Bibliographic Details
Published in:Phase transitions 2008-01, Vol.81 (1), p.51-63
Main Authors: Kajewski, D., Ujma, Z., Pawełczyk, M.
Format: Article
Language:English
Subjects:
Ceramics
Dielectric and ferroelectric properties
Phase transitions
Online Access:Get full text
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Summary:Dielectric, pyroelectric characteristics as well as the changes of electric conductivity were investigated for Nb 2 O 5 -doped (Ba 0.90 Pb 0.10 )TiO 3 ceramics. The influence of this dopant on the ceramic microstructure and the lattice parameters were also studied. The analysis of the results of electric conductivity and Seebeck coefficient has led to the conclusion that Nb 5+ ions reducing the conductivity by about two orders play the role of donors. The correlation between investigated electric characteristics and the dopant concentration was confirmed. Due to these findings some progress in understanding the influence of Nb-dopant was achieved.
ISSN:0141-1594
1029-0338
DOI:10.1080/01411590701513716