| Issue |
Europhys. Lett.
Volume 36, Number 6, November III 1996
|
|
|---|---|---|
| Page(s) | 461 - 466 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1996-00252-0 | |
| Published online | 01 September 2002 | |
Evidence for a glassy dynamics in (Rb-NH4)2SO4 mixed compounds
1
Centre de Recherche sur la Physique des Hautes Températures,
F-45071 Orléans Cedex 2, France
2
Laboratoire de Physique, Université de Bourgogne,
BP 138, 21004 Dijon Cedex, France
Received:
3
April
1996
Accepted:
8
October
1996
An orientational glass behavior is evidenced in a ![$\rm [Rb_{0.7}(NH_4)_{0.3}]_2SO_4$](/articles/epl/abs/1996/33/36611/36611_tex_eq1.png)
mixed
crystal. Dielectric experiments (1 kHz–250 MHz) performed along the c-axis
evidenced a polydispersive relaxation process. Its temperature dependence
follows a Vogel-Fulcher law with a freezing temperature of 12 K.
PACS: 77.80.-e – Ferroelectricity and antiferroelectricity / 77.22.Gm – Dielectric loss and relaxation / 64.70.Pf – Glass transitions
© EDP Sciences, 1996
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