Structural phase transition and thermal expansion in Bi1−2.5xPr1.5xBaxFeO3 ceramics

- The temperature dependence of the crystal structures are studied by HT-XRD.
- A structural phase transition of Rhombohedral-to-Cubic occurs for Bi0.875Pr0.075Ba0.05FeO3.
- The thermal expansion shows an isotropic and positive behavior.
- The relationship between the phase transition and thermal expansion efficiencies relate to the space symmetry.