Aging and slow dynamics in SrxBa1-xNb2O6

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

doi:10.1103/PhysRevB.72.134105

Aging and slow dynamics in SrxBa1-xNb2O6

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

Research output: Contribution to journal › Article › peer-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 language	English (US)
Article number	134105
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	72
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.72.134105
State	Published - Oct 1 2005
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.72.134105

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AB - 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.

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Aging and slow dynamics in SrxBa1-xNb2O6

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