| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1786731 | Current Applied Physics | 2012 | 6 Pages |
The Ba0.5Ca0.5TiO3 (BCT) composition dependent dielectric and structural properties of (1−x)K0.5Na0.5NbO3–xBa0.5Ca0.5TiO3 powders were investigated. Room temperature x-ray diffraction revealed the powder structure to transform from orthorhombic to cubic with increasing BCT composition. The frequency dependent dielectric constant measurements revealed a shift in the temperature of the maximum dielectric constant for at frequencies, suggesting that the system exhibits ferroelectric relaxor behavior. The system containing 15% BCT showed the closest calculated Curie–Weiss exponent to 2, which the exponent for a relaxor ferroelectric.
► The physical properties of Pb-free relaxor ferroelectric ceramics are studied. ► Room temperature XRD revealed the structure to transform with BCT concentration. ► 15% of BCT sample showed the closest calculated Curie–Weiss exponent to 2.
