crystallite


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Words related to crystallite

any of numerous minute rudimentary crystalline bodies of unknown composition found in glassy igneous rock

References in periodicals archive ?
Aspirin pills consist of many small crystallites in which molecules of acetylsalicylic acid form a regular spatial arrangement.
The strain-induced line broadening [[beta].sub.s] is given by the relation [[beta].sub.s] = 4[epsilon]tan[[theta].sub.hkl] and the total peak broadening is represented by the sum of the contributions of crystallite size and strain present in the material.
In-depth analysis using the Rietveld method of X-ray data is carried out, in terms of phase composition, crystallite size, microstrain, lattice parameter, and lattice defects such as dislocation density and stacking faults.
The average size of the crystallites was determined qualitatively using the Scherrer equation (Equation 1).
The mean crystallite size (D) of the particles was calculated from the XRD line broadening measurement using the Scherrer equation, equation(l) [24]:
The first condition that has been considered was the size of the crystallites. According to our previous work as well as the work considered by the other groups, the larger the crystallite size is, the larger the optical gain obtained from the material is, and thus the possibility of obtaining stimulated emission from the samples.
The crystallite size was calculated using the Scherrer equation with the full-width at half of the maximum intensity.
where [d.sub.RX] is the crystallite size, k - 0.9 is a correction factor which accounts for the particle shape, [beta] is the full width at half maximum (FWHM) of the most intense diffraction plane, [lambda] is the wave length of Cu target (0.15406 nm), and [theta] is the Bragg's angle.
where D is the crystallite size, [lambda] is the wavelength of the X-ray, and [beta] is the full width at half maximum (FWHM) of the XRD peak with which the crystallite size is calculated and [theta] is the corresponding Bragg angle.
X-ray diffraction (XRD) reveals that the synthesized ZnO has hexagonal crystal structure with mean crystallite size of 29 nm.
The crystallite size of these samples was measured using the Scherer equation as shown below [19];
Ni-SDC propose to be appropriate anode material to attain high performance because better output for anode materials require large triple phase boundary (where chemical reaction take place), fine crystallite size and proper porosity [7].
"The consensus of opinion is that modern day players are not necessarily better than their predecessors, but that the introduction of crystallite balls and better cloths has seen more consistent scoring.