Electrical properties of ferroelectric addition compound K2SeO4.Te(OH)(6)

Authors
Dammak, M Khemakhem, H Zouari, N Kolsi, AW Mhiri, T
Citation
M. Dammak et al., Electrical properties of ferroelectric addition compound K2SeO4.Te(OH)(6), SOL ST ION, 127(1-2), 2000, pp. 125-132
Citations number
19
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE IONICS
ISSN journal
01672738 → ACNP
Volume
127
Issue
1-2
Year of publication
2000
Pages
125 - 132
Database
ISI
SICI code
0167-2738(200001)127:1-2<125:EPOFAC>2.0.ZU;2-D
Abstract
Single crystals of K2SeO4. Te(OH)(6), (KTSe) were obtained by slow evaporat ion at 300 K. The differential scanning calorimetry diagram showed three an omalies at 433, 480 and 495 K, respectively. The dielectric constant evolut ion as a function of frequency and temperature revealed the first two anoma lies. The peak at 433 K was attributed to the ferroelectric-paraelectric ph ase transition and the second one to the superionic phase transition. X-ray powder diffraction data confirmed that the third anomaly at 495 K characte rizes the decomposition before melting of the material. (C) 2000 Elsevier S cience BN. All rights reserved.