The ferroelectric phase transition in PbTiO3 from a local perspective

N. Sicron; B. Ravel; Y. Yacoby; E. A. Stern; F. Dogan; J. J. Rehr

doi:10.1016/0921-4526(94)00687-Q

The ferroelectric phase transition in PbTiO₃ from a local perspective

N. Sicron^*, B. Ravel, Y. Yacoby, E. A. Stern, F. Dogan, J. J. Rehr

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

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.

Original language	English
Pages (from-to)	319-320
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	208-209
Issue number	C
DOIs	https://doi.org/10.1016/0921-4526(94)00687-Q
State	Published - 1 Mar 1995

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title = "The ferroelectric phase transition in PbTiO3 from a local perspective",

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 Tc. The local distortions above Tc are about 50-70% of their values at 15 K. The local distortions above Tc 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.",

author = "N. Sicron and B. Ravel and Y. Yacoby and Stern, {E. A.} and F. Dogan and Rehr, {J. J.}",

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AU - Ravel, B.

AU - Yacoby, Y.

AU - Stern, E. A.

AU - Dogan, F.

AU - Rehr, J. J.

PY - 1995/3/1

Y1 - 1995/3/1

N2 - 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 Tc. The local distortions above Tc are about 50-70% of their values at 15 K. The local distortions above Tc 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.

AB - 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 Tc. The local distortions above Tc are about 50-70% of their values at 15 K. The local distortions above Tc 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.

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JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

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ER -

The ferroelectric phase transition in PbTiO₃ from a local perspective

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