Multiple aging mechanisms in ferroelectric deuterated potassium dihydrogen phosphate.

Autor: Fields, Gregory A., Cieszynski, Samuel F., Zhao, Bo, Tadesse, Kidan A., Sheikh, Mohammed A., Colla, Eugene V., Weissman, M. B.
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Zdroj: Journal of Applied Physics; 5/21/2019, Vol. 125 Issue 19, pN.PAG-N.PAG, 10p, 2 Color Photographs, 12 Graphs
Abstrakt: The anomalously large dielectric aging in ferroelectric partially deuterated potassium dihydrogen phosphate is found to have multiple distinct mechanisms. Two components cause a decrease in dielectric response over a limited range of fields around the aging field. Substantial aging occurs on time scales of ∼1000 s after a field change, as expected for a hydrogen/deuterium diffusion mechanism. A slower component can give an almost complete loss of domain-wall dielectric response at the aging field after weeks of aging. There is also a particularly unusual aging in which the dielectric response increases with time after rapid cooling. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index