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Structure, ferroelectric and piezoelectric properties of multiferroic Bi0.875Sm0.125FeO3 ceramics
- Source :
-
Journal of Alloys & Compounds . Nov2012, Vol. 541, p173-176. 4p. - Publication Year :
- 2012
-
Abstract
- Abstract: With a rhombohedra-like structure, the Bi0.875Sm0.125FeO3 ceramics show much-improved ferroelectric and piezoelectric properties: a saturated ferroelectric polarization of 40μC/cm2 and a piezoelectric d 33 of 45pC/N at 20°C. After the polarized sample was annealed at 600°C, its d 33 decreases to ∼20pC/N. Besides, Bi0.875Sm0.125FeO3 shows dielectric or impedance resonances at 20–550°C, suggesting that the ferroelectric component with high Curie temperature still partially remained at 550°C. However, the impedance and the resistance decrease so fast with temperature increasing that both of them are below 1000ohm above 420°C. Even so, this piezoelectric resonance method can explore leaky ferroelectrics at high temperature. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 541
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 80028742
- Full Text :
- https://doi.org/10.1016/j.jallcom.2012.06.094