Nanoscale compositional segregation and suppression of polar coupling in a relaxor ferroelectric

• Published in: Acta materialia Vol. 158; pp. 422 - 429
• Main Authors: Roncal-Herrero, Teresa, Harrington, John, Zeb, Aurang, Milne, Steven J., Brown, Andy P.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.10.2018
• Subjects: Chemical segregation; Electron microscopy; Ferroelectric relaxor; Functional ceramics; Chemical segregation; Electron microscopy; Functional ceramics; Ferroelectric relaxor

A number of relaxor ferroelectric ceramics have been demonstrated to possess a near stable value of relative permittivity over very wide temperature ranges. This cannot be explained by conventional theories of relaxors. One such system is based on the perovskite solid solution series: (1-x) (Ba0.8Ca...