The Ferroelectric Phase Transition in PbTiO₃ from a Local Perspective

Author

Noam Sicron
Bruce D. Ravel
Yitzhak Yacobi
Edward A. Stern
Fatih Dogan, Missouri University of Science and TechnologyFollow
John J. Rehr

Abstract

XAFS of Pb and Ti in PbTiO₃ provides quantitative information on the local structure of this ferroelectric perovskite. It was found that both Pb and Ti remain in off center positions above T_c. The local distortions above T_c are about 50-70% of their values at 15 K. The local distortions above T_c are correlated over at least several unit cells. These results suggest that the off center displacements of the Pb and Ti are caused by local interactions and not just by a force field associated with the order parameter.

Recommended Citation

N. Sicron et al., "The Ferroelectric Phase Transition in PbTiO₃ from a Local Perspective," Physica B: Condensed Matter, vol. 208-209, no. C, pp. 319 - 320, Elsevier, Mar 1995.

The definitive version is available at https://doi.org/10.1016/0921-4526(94)00687-Q

Department(s)

Materials Science and Engineering

International Standard Serial Number (ISSN)

0921-4526

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1995 Elsevier, All rights reserved.

Publication Date

01 Mar 1995