Soft Phonon Anomalies in Relaxor Ferroelectrics

G. Shirane; P. M. Gehring

Soft Phonon Anomalies in Relaxor Ferroelectrics

Materials Science 2007-05-23 v1

Authors: G. Shirane , P. M. Gehring

Abstract

A review is given of the phonon anomalies, which have been termed ``waterfalls,'' that were recently discovered through a series of neutron inelastic scattering measurements on the lead-oxide relaxor systems PZN-xPT, PMN, and PZN. We discuss a simple coupled-mode model that has been used successfully to describe the basic features of the waterfall, and which relates this unusual feature to the presence of polar micro-regions.

Keywords

phonon modes and lattice dynamics

Cite

@article{arxiv.cond-mat/0011122,
  title  = {Soft Phonon Anomalies in Relaxor Ferroelectrics},
  author = {G. Shirane and P. M. Gehring},
  journal= {arXiv preprint arXiv:cond-mat/0011122},
  year   = {2007}
}

Comments

5 pages, 8 figures (one color). Submitted to the J. Phys. Soc. Jpn as part of the ASR-2000 Conference Proceedings. Uses asr2k.sty file (which is included)

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