Maqola

Dielectric Relaxation in Nematic and Isotropic Phases of p-Azoxyphenetole (PAP)

S. Urbana Institute of Physics of the Jagiellonian University , Cracow, Address: Institute of Physics of the Jagiellonian University, 30-059 Kraków, ul., Reymonta, 4, PolandS. Wróbela Institute of Physics of the Jagiellonian University , Cracow, Address: Institute of Physics of the Jagiellonian University, 30-059 Kraków, ul., Reymonta, 4, PolandK. Chłędowskab Technical University , RzeszówJ. Chruścielc Institute of Chemistry, Agricultural and Pedagogical, University , SiediceJ.A. Janikd Institute of Nuclear Physics , CracowH. Kressea Institute of Physics of the Jagiellonian University , Cracow, Address: Institute of Physics of the Jagiellonian University, 30-059 Kraków, ul., Reymonta, 4, Poland

Molecular crystals and liquid crystalsjournal1983en

ABI

Annotatsiya

Abstract Dielectric relaxation studies of the isotropic and nematic phases of 4,4'-n-diethoxyazoxybenzene (PAP) have been carried out in the radio and microwave frequency ranges. In the nematic phase two substantially different relaxation processes, with relaxation times τ‖ ∼ 10−8 sec and τ‖ ∼ 10−11 sec, have been detected. They are connected with the reorientational motions of molecules around their short and long axes, respectively. The dielectric permittivity extrapolated to very high frequencies is markedly greater than the squared refractive index. This indicates that there might be additional relaxation process in the infra-red region. The relaxation spectrum of the isotropic phase is broad and the most probable relaxation time τ0 = 2 · 10−11 sec.

Hali tarjima qilinmagan

Mavzular

Liquid Crystal Research Advancements Solid-state spectroscopy and crystallography Photochemistry and Electron Transfer Studies

Identifikatorlar

DOI: 10.1080/00268948308073719

Iqtiboslar va manbalar

1 ta iqtibos 14 ta foydalanilgan manba

Koʻrsatkichlar — AkademScholar