Scientific article

Dielectric and thermal studies of the phase transitions in Cr-Cl boracite

Published inFerroelectrics, vol. 124, no. 1-4, p. 421-426
Publication date1991

The antiferro-/paraelec. (.hivin.42m/.hivin.43m at T1 = 264 K) and ferro-/antiferroelec. (mm2/.hivin.42m at T2 ~ 160 K) phase transitions of Cl-Cl boracite were studied by dielec. and thermal anal. The permittivity of both ferroic phases shows small and weakly temp. dependent values (er' = 8.5-13) and discontinuity at the onset of the phase transitions at T1 and T2, which are characterized by improper nature. Above T1 er' decreases with increasing temp., referring to the Curie-Weiss law. Microcalorimetry shows the relevant enthalpy changes: DH1 = 1.98 kJ.mole-1 at T1; DH... = 0.03 kJ.mole-1 at T2. The effect of the hydrostatic pressure on the phase transition temp. is discussed.

  • Ferroelec antiferroelec phase chromium chloride boracite
  • Swiss National Science Foundation - 1990
Citation (ISO format)
YE, Zuo-Guang et al. Dielectric and thermal studies of the phase transitions in Cr-Cl boracite. In: Ferroelectrics, 1991, vol. 124, n° 1-4, p. 421–426. doi: 10.1080/00150199108209476
Main files (1)
Article (Published version)
ISSN of the journal0015-0193

Technical informations

Creation11/10/2013 4:48:00 PM
First validation11/10/2013 4:48:00 PM
Update time03/14/2023 8:38:40 PM
Status update03/14/2023 8:38:39 PM
Last indexation01/16/2024 8:16:00 AM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack