Two-step phase changes in cubic relaxor ferroelectrics

Eugene V. Colla, M. B. Weissman

Research output: Contribution to journalArticlepeer-review

Abstract

The field-driven conversion between the zero-field-cooled frozen relaxor state and a ferroelectric state of several cubic relaxors is found to occur in at least two distinct steps, after a period of creep, as a function of time. The relaxation of this state back to a relaxor state under warming in zero field also occurs via two or more sharp steps, in contrast to a one-step relaxation of the ferroelectric state formed by field cooling. An intermediate state can be trapped by interrupting the polarization. Giant pyroelectric noise appears in some of the non-equilibrium regimes. It is suggested that two coupled types of order, one ferroelectric and the other glassy, may be required to account for these data.

Original languageEnglish (US)
Article number104106
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number10
DOIs
StatePublished - Sep 1 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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