Volume 36, Number 6, November III 1996
|Page(s)||461 - 466|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Evidence for a glassy dynamics in (Rb-NH4)2SO4 mixed compounds
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
Accepted: 8 October 1996
An orientational glass behavior is evidenced in a 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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