ISSN:
1434-6036
Keywords:
PACS. 05.40.-a Fluctuation phenomena, random processes, noise, and Brownian motion – 77.22.Gm Dielectric loss and relaxation – 78.30.Ly Disordered solids
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: We characterize in details the aging properties of the ferroelectric phase of KTa1-xNbx O3 (KTN), where both rejuvenation and (partial) memory are observed. In particular, we carefully examine the frequency dependence of several quantities that characterize aging, rejuvenation and memory. We find a marked subaging behaviour, with an a.c. dielectric susceptiblity scaling as ω , where t w is the waiting time. We suggest an interpretation in terms of pinned domain walls, much along the lines proposed for aging in a disordered ferromagnet, where both domain wall reconformations and overall (cumulative) domain growth are needed to rationalize the experimental findings.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100510170175
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