Volume 37, Number 2, January II 1997
|Page(s)||145 - 150|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Relaxational dynamics of polar nanodomains in Sr1-xCaxTiO3 x = 0.002
Laboratorium für Angewandte Physik,
Gerhard-Mercator-Universität Duisburg, D-47048 Duisburg,
2 Department of Physics and Astronomy, Arizona State University, Tempe, AZ 85287-1504, USA
3 IBM Forschungslaboratorium - Säumerstrasse 4, CH-8803 Rüschlikon, Switzerland
Accepted: 22 November 1996
The dielectric permittivity of , x = 0.002, measured at frequencies and temperatures , exhibits enhanced loss, , on its low-f slope. This contrasts with conventional glassy dynamics and is attributed to dynamic heterogeneity involving thermally activated relaxation of dynamically coupled mesoscopic domains. Crossover into non-activated dynamics occurs at very low f as corroborated by temporal relaxation studies of the field-induced polarization P. Below athermal quantum tunneling starts to dominate both and P(t).
PACS: 77.22.Gm – Dielectric loss and relaxation / 78.30.Ly – Disordered solids
© EDP Sciences, 1997
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.