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Results demonstrate that the deviations in infinite-cell-gap capacitance analysis occurs at an aperture ratio of unity between the gap thickness of the liquid crystal and the electrode width. Data further reveal that the conformational mapping derived capacitance-voltage curve is very similar to the one derived from two-dimensional simultions

A one-dimensional simulation procedure for determining the liquid crystal director distribution in a cell for arbitrary pretilt angles on two glass substrate surfaces was developed. The technique is demonstrated for cases of an asymmetric twisted nematic (TN) cell, a hybrid alignment nematic cell and a bend alignment nematic cell. The process can also be used for the study of the stability of ultraviolet-type two-domain TN complementary TN liquid crystal displays.

Discusses the utilities of corrugated quantum well infrared photodetectors (QWIP) in detector material characterization. Capability of the characterization technique of providing accurate and detailed information on the intrinsic properties of QWIP materials under actual operating conditions.

The magnetoresistance (MR) ratio is enhanced by 35% by inserting the nano-oxide layer (NOL) at the Ta/Co interface in the FeMn-based top spin valves (Ta/NOL/Co/Cu/Co/FeMn/Ta). The enhancement is attributed to specular reflection, resulting in a large resistance change and small sheet resistance. However, the formation of NOL at the interface of Ta/Co suppresses the (111) texture, resulting in small exchange fields. Top spin valves with NOLs show good thermal stability up to 200 °C annealing. The MR ratio is further increased after annealing at temperatures below 200 °C. Enhancement of the MR ratio by 61% can be achieved by annealing at 150 °C. For bottom spin valves (Ta/NiFe/FeMn/Co/Cu/NiFe/Ta), NOLs formed at FeMn/Co and NiFe/Ta interfaces increase MR ratios, but NOLs at Co/Cu or Cu/NiFe deteriorate the differential spin scattering and significantly reduce MR ratios. © 2001 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Investigates the effect of partial substitution neodymium-fluorine or chlorine for neodymium-oxygen on the reduction-diffusion process of neodymium-iron-boron powders. Reaction of neodymium-fluorine or chlorine with calcium; Distribution of calcium-chlorine around neodymium-iron-boron grains after reaction; Reaction of calcium-chlorine with water.

Investigates the effect of alloying concentration of dysprosium and the absorption amount of hydrogen on the magnetic properties of PrFeB magnets. Preparation of the sintered magnets; Demagnetization curves of the magnets; Information on the alloying effect of hydrogen.

Presents a novel low-temperature preparation of Ni-Zn ferrite and the properties of the ultrafine particles formed. Saturation magnetization of the ferrites; Outcome of an increase in hydrazine concentrations; Variations of the magnetic properties and lattice parameters as a function of preparation conditions.

Provides information on a study which investigated the effect of nitrogen interstitial in an alpha-iron crystalline on the magnetic soft properties of an iron compound thin film. Methods; Results; Discussion.

Examines the effect of grain size of densely sintered manganese-zinc ferrites. Details on the experiment; Influence of the reduction of grain boundary layer on high-electrical-resistivity boundary layer; Frequency dependence of resistivity for samples; Information on the domain configuration effect.

Provides information on a study that investigated the effect of the addition of Er[sub2]O[sub3] on the microstructure and physical properties of manganese-zinc ferrites for high-power use. Experimental procedure; Results and discussion on the study; Conclusions.

Investigates the peak value of switching field distribution, coercivity and saturation magnetization as functions of temperature in Co-δ-Fe[sub2]O[sub3] and δ-Fe[sub2]O[sub3] powders. Correlation of the coercivity of the powders with temperature; Formula for studying the temperature dependence of magnetization.