Single crystal plates

Single-crystal plates of vapor-grown, 100 ppm CdS Te were purchased from Cleveland Crystals, Inc., Cleveland, Ohio. 

Mica for use as a dielectric is obtained from the mineral muscovite (KAl2(Si3Al)O10(OH)2) which can be cleaved into single-crystal plates between 0.25 and 50 fim thick. 

Fig. 8-8 Use of the unit stereographic triangle to describe crystal orientation. The point inside the triangle is the normal to the single crystal plate whose orientation is shown in Fig. 8-7.

By using appropriate calibration (e.g., a quartz single-crystal plate) the off diagonal susceptibility (or sp sp deduced directly from these... 

Ni or Au coated rounds (W). They serve as supports for silicon single-crystal plates used in transistors, diodes, thyristors, and rectifiers. 

Scintillators used for y-ray detection from TC43 (141 kev), kev) and Tlgi (75 kev), include NaI Tl and Bi GCgO available in 80 cm single-crystal plates, a form not easily achieved by other scintillator phosphor compositions. 

Other investigators also observed—for their reactions— the highest catalytic activity in the [111] directions of silver single crystal plates 15). It is, however, not always the most densely packed planes that favor the reaction. Gwathmey et al., using the same catalytic reaction, found that the... 

The critical component of an ion selective electrode is a membrane that acts to pass the selected ions into the interior of the electrode assembly (Figure 9.5a). These are of two principal types. Crystal membranes consist of a polycrystalline or single-crystal plate. For example, fluoride ion (F )... 

In this study, similar composite lilms of 100 nm thick were prepared on KCl single crystal plates, and Ihese plates were dissolved in water prior to the transmission electron microscopic (TEM), JEM 100-C, JEOL oberservation. Optical absorption spectra of the composite films and those dissolved in m-cresol solutiorks were measured in the wavelength range between 300 and 900 nm by means of... 

As reinforcement material for all matrix materials - ceramics, metals, and plastics -SiC platelets offer a similar potential as whiskers, but at lower cost and without any health hazard. Platelets are single-crystal, plate-like a-SiC particles with an aspect ratio of about 8-15. SiC platelets typically range in size from about 5-100 pm in diameter and 1-5 pm in thickness (see Table 4.2). They are produced commercially from inexpensive raw materials (silica and carbon, micron-sized 3-SiC powders) at temperatures of 1900-2100 °C under an inert atmosphere [100]. Due to the presence of the boron and aluminum dopants added, platelet-shaped crystals are formed. Aluminum enhances the growth in the [0001] direction and decelerates the growth perpendicular to the [0001] direction. Boron enhances the growth notoriously perpendicular to the [0001] direction [101]. Aluminum (0.04—0.45 wt%), boron and nickel (each 0.4-0.8 wt%), and free silicon (0.3-3.6 wt%) were identified as impurity elements in SiC platelets produced by Millenium Materials [102]. 

Measurements have been carried out on small single crystals (plates with sizes 0.5 X 0.5 mm). Some difficulties have arisen. First, many of the single crystals that have been prepared are imperfect. Second, the classical, precise methods for k measurements were developed for large samples. Thus, it has been necessary to develop a new technique, but significant errors are associated with it. 

Due to the low solubility of the longer Ts, single crystals could only be successfully grown by using a sublimation technique [15], the so called Lipsett technique. For 6T [61] and 8T [96] single crystals (plates) of macroscopic dimensions were obtained with a length of a few millimeters and a thickness of some tens of microns. 

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