| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1473451 | Journal of the European Ceramic Society | 2016 | 9 Pages |
Abstract
Electric conduction and dielectric relaxation behavior in (1—x)(Bi0.5Na0.5TiO3-BaTiO3)-xNaNbO3 ((1—x)(BNT–BT)–xNN) ceramics were investigated. All compositions showed negative temperature coefficient of resistance (NTCR) behavior. The bulk conductivity followed the Arrhenius law with Ea = 1.24–1.55 eV, which can be attributed to the electronic conduction. In the modulus (M′′-f) spectra, a peak and a shoulder were observed, corresponding to the bulk and polar nano regions (PNRs) response respectively. With the increase of either temperature or NN content, the shoulder gradually depressed and even disappeared. A correlation between the PNRs evolution and the relaxation behavior was constructed.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Qi Xu, Michael T. Lanagan, Wei Luo, Lin Zhang, Juan Xie, Hua Hao, Minghe Cao, Zhonghua Yao, Hanxing Liu,