| Issue |
Europhys. Lett.
Volume 55, Number 6, September II 2001
|
|
|---|---|---|
| Page(s) | 781 - 787 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2001-00348-5 | |
| Published online | 01 December 2003 | |
Random-field Ising-type transition of pure and doped SBN from the relaxor into the ferroelectric state
1
Laboratorium für Angewandte Physik,
Gerhard-Mercator-Universität
47048 Duisburg, Germany
2
Jožef Stefan Institute - P.O. Box 3000, 1001
Ljubljana, Slovenia
3
Fachbereich Physik, Universität Osnabrück -
D-49069 Osnabrück, Germany
Received:
9
April
2001
Accepted:
27
June
2001
Activated critical dynamics and vanishing of the susceptibility
ratio 
in the zero-frequency
limit unequivocally evidence the
phase transitions of the uniaxial relaxor crystals SBN, SBN:
and
SBN:
to refer to the three-dimensional random-field Ising
universality class. The relaxor-like freezing of polar nanoregions
within the precursor regime is successfully described within the
framework of the mesoscopic uniaxial spherical random-bond
random-field model.
PACS: 05.70.Jk – Critical point phenomena / 77.22.Ch – Permittivity (dielectric function)
© EDP Sciences, 2001
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