Repozytorium
Wyszukaj
Kolekcje
Inne
Revised approach to dielectric relaxation of TMACAB crystals near the ferroelectric phase transition.
Autorzy
Rok wydania
2001
Czasopismo
IEEE Transactions on Dielectrics and Electrical Insulation
Numer woluminu
8
Strony
481-484
DOI
10.1109/94.933369
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
This paper presents results on statistical investigations of dielectric relaxation data of the mixed crystal [N(CH/sub 3/)/sub 3/H]/sub 3/Sb/sub 2(1-x)/Bi/sub 2x/Cl/sub 9/ (x=0, 0.07, 0.33) (TMACAB) in the frequency range 10/sup 7/ to 10/sup 9/ Hz. The most characteristic property observed at temperatures close to the ferroelectric phase transition is the non-Debye dielectric contribution of ferroelectric active dipoles exhibiting the two power law 'universal' relaxation response. This contribution does not appear in the paraelectric phase and its appearance is observed in the region in which the random process of formation of one phase into another originates. The observed behavior commonly is assumed to reflect the relaxation response of randomly-sized order clusters, considered as precursors of the ferroelectric domains. Using the idea of order clusters we reveal the relaxation mechanism underlying the investigated dielectric response of TMACAB crystals. We also discuss the influence of temperature and stoichiometry on the dielectric response.
Adres publiczny
Podobne publikacje
Two relaxators dielectric behaviour of ammonium hydrogen bis-chloroacetate near the ferroelectric phase transition.
Pawlaczyk Czesław, Jakubas Ryszard
The reorientational motion of substituted benzenes in the crystalline state: phase transition and dielectric relaxation of nitropentachlorobenzene and tetrachlorometaxylene.
Kołodziej Hubert A., Freundlich Piotr, Sorriso Salvatore, Sorriso C.
Comparison studies of the influence of an electric field on permittivity close to ferroelectric-paraelectric phase transition in TGS, DMACA and DMABA crystals.
Orzechowski Kazimierz, Bator Grażyna , Jakubas Ryszard