Issue |
Europhys. Lett.
Volume 57, Number 1, January 2002
|
|
---|---|---|
Page(s) | 107 - 112 | |
Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
DOI | https://doi.org/10.1209/epl/i2002-00548-y | |
Published online | 01 September 2002 |
Non-Debye domain wall response in
1
Fachbereich Physik, Martin-Luther-Universität Halle
F.-Bach-Platz 6, D-06108 Halle, Germany
2
Institut für Experimentalphysik, Universität Wien
Strudlhofgasse 4, A-1090 Wien, Austria
Received:
31
August
2001
Accepted:
8
October
2001
Data obtained by dielectric spectroscopy reveal a strongly
polydispersive, non-Debye dispersion appearing in potassium
dihydrogen phosphate on cooling below the
paraelectric-ferroelectric phase transition temperature .
Characterized by a nearly frequency-independent dielectric loss
and a real part of the permittivity decreasing in an almost linear
way with frequency on a logarithmic scale, the corresponding
relaxation mechanism is discussed in terms of dielectric
contributions of elastic domain walls weakly pinned on quenched
disorder.
PACS: 77.22.Gm – Dielectric loss and relaxation / 77.80.Dj – Domain structure; hysteresis / 77.84.Fa – KDP- and TGS-type crystals
© EDP Sciences, 2002
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