Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1462345 | Ceramics International | 2011 | 5 Pages |
Abstract
Ba0.8Sr0.2Ti1−5x/4NbxO3 ceramics, x = 0, 0.01, 0.05, 0.10, were fabricated by conventional solid-state reaction. With increasing niobium content the ferroelectric phase transition temperature decreases linearly, and the dispersivity of the transition increases. Niobium B-site decreases transition temperature more pronounced than Sr2+ at A-site. The heterovalent substitution of Nb5+ in low content causes local defect dipole, while more substitutions introduce disorder to disturb the long-range dipole correlation. Ba0.8Sr0.2Ti1−0.5/4Nb0.1O3 ceramic shows weak ferroelectric loop at room temperature far from its transition temperature, 153 K.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Wan Q. Cao, Li Yang, Mukhlis M. Ismail, Ping Feng,