| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1477023 | Journal of the European Ceramic Society | 2009 | 9 Pages |
Abstract
An extensive range of Ho-doped BaTiO3 solid solution forms in which Ho substitutes for Ti with creation of oxygen vacancies. The effect of Ho substitution is to destabilise thermodynamically the high-temperature hexagonal polymorph of BaTiO3. Nevertheless, at high Ho contents, the hexagonal polymorph forms as a kinetically stable intermediate before transforming to the thermodynamically stable cubic polymorph; its formation represents an example of Ostwald's rule of successive reactions. Samples fired at ∼1400 °C and cooled in air are insulating and transform from ferroelectric to relaxor ferroelectric behaviour with increasing x.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Yang Liu, Anthony R. West,