Aging and slow dynamics in SrxBa1-xNb2O6

Lambert K. Chao, Eugene V. Colla, M. B. Weissman, Dwight D. Viehland

Research output: Contribution to journalArticlepeer-review

Abstract

The uniaxial "relaxor" ferroelectric SrxBa1-xNb2O6 (SBN) is found to crossover from holelike to cumulative aging as it is cooled into the frozen relaxor regime. The cumulative aging contrasts sharply with the behavior of cubic relaxors, supporting ideas that the spin-glasslike aging in cubic relaxors is connected with polarization components orthogonal to the net ferropolarization. In the relaxor regime, small dc fields are found to suppress much of the dissipative response, similar to long-time aging. Pyroelectric currents are measured, along with limits on pyroelectric noise, allowing limits to be set on dynamically coherent domain sizes. Large nonlinear susceptibilities are found near the freezing transition.

Original languageEnglish (US)
Article number134105
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number13
DOIs
StatePublished - Oct 1 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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