| Issue |
Europhys. Lett.
Volume 57, Number 1, January 2002
|
|
|---|---|---|
| Page(s) | 14 - 19 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2002-00534-y | |
| Published online | 01 September 2002 | |
Uniaxial relaxor ferroelectrics: The ferroic random-field Ising model materialized at last
1
Laboratorium für Angewandte Physik,
Gerhard-Mercator-Universität Duisburg, D-47048 Duisburg,
Germany
2
Jozef Stefan Institute - P.O. Box 3000, 1001 Ljubljana,
Slovenia
3
Fachbereich Physik, Universität Osnabrück - D-46069,
Osnabrück, Germany
Received:
13
August
2001
Accepted:
22
October
2001
Owing to their intrinsic charge disorder ferroelectric crystals of
strontium-barium-niobate doped with 
materialize the
three-dimensional ferroic random-field Ising model (RFIM) as
evidenced by order paramenter and susceptibility criticalities
with 
NMR and dielectric spectroscopy,
respectively. Upon cooling towards 
, extreme critical
slowing-down due to activated dynamic scaling gives rise to
relaxor-like dispersion of the susceptibility and to a metastable
ferroelectric nanodomain state with fractal size distribution as
imaged by piezoelectric force microscopy.
PACS: 05.70.Jk – Critical point phenomena / 77.80.Dj – Domain structure; hysteresis
© EDP Sciences, 2002
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