Dielectric and structural characterization of high-temperature ferroelectric xBi(Zn1/2Ti1/2)O3−yPbZrO3–zPbTiO3 perovskite ternary solid solution
Abstract
This paper reports the development of a new bismuth and lead oxide–based high-temperature ferroelectric ternary solid solution xBi(Zn1/2Ti1/2)O3−yPbZrO3–zPbTiO3 (xBZT–yPZ–zPT). Structural analysis has been carried out by XRD and SEM. A morphotropic phase boundary (MPB) between rhombohedral and tetragonal phases has been located on a pseudobinary line 0.1BZT–0.9[(1−x)PZ–xPT] within the ternary phase diagram. Dielectric studies of various compositions along the pseudobinary line 0.1BZT–0.9[(1−x)PZ–xPT] have been carried out in a wide range of temperatures from room temperature to 600 °C, on both poled and unpoled samples. Compositions near the MPB exhibit high dielectric permittivity (∼23 000–28 000). Rhombohedral compositions show a diffuse phase transition with a small frequency dispersion. Based on the dielectric properties and differential scanning calorimetry, phase transition trends versus composition along the pseudobinary line 0.1BZT–0.9[(1−x)PZ−xPT] have been demonstrated.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 01, 2011
- Source ID
- 10.1063/1.3553874
Entities
People
- Akansha Dwivedi
- Clive A. Randall
Organizations
- Office of Naval Research
- Pennsylvania State University