Title

Mössbauer-Effect Studies of the Phase Transitions in Antiferroelectric PbZrO₃ and Ferroelectric PbTi₀.₀2Zr₀.₈O₃

Abstract

The Mössbauer spectra were studied for the antiferroelectric compound PbZrO3 and for the closely related ferroelectric PbTi 0.2Zr0.8O3. In both cases, a substitution of 5-mol% BiFeO3 was made to permit the Mössbauer measurements. Little difference was found in the isomer shift in these compounds, whether they were in the ferroelectric, antiferroelectric, or cubic state, indicating that the bonding character is not affected by the transitions among the states. There was a pronounced and approximately equivalent dip in the recoil-free fraction at the Curie points of both the antiferroelectric and ferroelectric materials, associated with a low-frequency lattice mode at the Brillouin-zone boundary. © 1971 The American Institute of Physics.

Department(s)

Physics

Second Department

Chemistry

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1971 American Institute of Physics (AIP), All rights reserved.

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