Repozytorium
Wyszukaj
Kolekcje
Inne
The pressure influence on the incommensurate-commensurate ferroelectric phase transition in [4-NH2C5H4NH][SbCl4].
Autorzy
Rok wydania
2005
Czasopismo
Numer woluminu
136
Strony
470-474
DOI
10.1016/j.ssc.2005.09.005
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The dielectric properties of the [4-NH2C5H4NH] SbCl4 (abbreviated as 4-APCA) crystal were investigated under hydrostatic pressure up to 300 Mpa. The pressure–temperature phase diagram was given. The paraelectric–ferroelectric phase transition (II→III) temperature (Tc) increases linearly with increasing pressure with a slope dTc/dp=21×10−2 K/MPa. The pressure dependence of Curie–Weiss constants has been evaluated also. In the paraelectric phase (II) the Curie constant (C+) was pressure dependent whereas the C− constant over the ferroelectric phase (III) was almost constant. The results are interpreted in terms of improper and displacive type phase transition model with a soft phonon at a zone boundary.
Słowa kluczowe
Ferroelectric, Dielectric permittivity, Phase transitions, High pressure
Adres publiczny
https://doi.org/10.1016/j.ssc.2005.09.005
Strona internetowa wydawcy
Podobne publikacje
Effect of hydrostatic pressure on the phase transition temperature in [NH2(CH3)2]3Sb2Cl9.
Zdanowska-Frączek M., Jakubas Ryszard, Krupski M.
High-pressure dielectric studies of a novel hydrogen-bonded ferroelectric (NH4)2H2P2O6.
Zdanowska-Frączek M., Frączek Z. J., Szklarz Przemysław, Jakubas Ryszard
Decoupling of the order-disorder and displacive contributions to the phase transition in NH4H(ClH2CCOO)2.
Zdanowska-Frączek M., Jakubas Ryszard, Czarnecki P.