Observation of Amplitude Mode Under Dc Electric Field in Smectic-cα* Phase

Linear and nonlinear dielectric spectroscopy under DC electric fields has been performed in the high temperature region of smectic-Cα* phase of an antiferroelectric liquid crystal 4-(1-methylheptyloxycarbonyl) phenyl 4-octylcarbonyloxybiphenyl-4-carboxylate (MHPOCBC) to obtain a deeper insight of dynamic properties. It is observed a softening of amplitude mode and ferroelectric mode with increasing the DC field close to the smectic-Cα*-smectic-A(C) phase boundary line. It was seen that the relaxation frequency of the amplitude mode obeys the Curie-Weiss law with respect to the applied electric field

Dielectric Propertiesof Smectic-cα* Phase

DIELECTRIC PROPERTIESOF SMECTIC-Cα* PHASE. Linear and third-order nonlinear dielectric measurements have been performed within the smectic-Cα* phase of antiferroelectric liquid crystal 4-(1-methyl-heptyloxycarbonyl) phenyl 4-octylcarbonyloxybiphenyl-4-carboxylate (MHPOCBC). In the low temperature region of smectic-Cα* phase, we observed the hysteresis of dielectric constant in cooling and heating process measurement. From the frequency dispersion measurement, it has been found that the frequency relaxation of antiferroelectric Goldstone mode and ‘low frequency mode', decreased with increasing the temperature until approach the center of the smectic-Cα* phase

Design of Scintillation-Neutron Detector for Time-of-Flight Expertments

開始ページ、終了ページ: 冊子体のページ付

Project for Heavy Charged-particle Beam Multi-purpose Use

開始ページ、終了ページ: 冊子体のページ付

Spin Mode in the Low-Energy (p,n) Reaction

開始ページ、終了ページ: 冊子体のページ付

Continuous background produced by the graphite collimator

開始ページ、終了ページ: 冊子体のページ付

K-Shell Ionization of Rare Earth Elements in the Energy Range of 3-40 MeV/amu

開始ページ、終了ページ: 冊子体のページ付

Continuum X Rays of 10-70 keV form Carbon Thick-Target Bombarded by 3 MeV Protons

開始ページ、終了ページ: 冊子体のページ付