crystallite

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crystallite

[′kris·tə‚līt]

(geology)

A small, rudimentary form of crystal which is of unknown mineralogic composition and which does not polarize light.

References in periodicals archive ?

An ultrashort hard x-ray pulse, which is delayed relative to the pump pulse, is diffracted from the excited powder of crystallites to map the momentary spatial arrangement of electrons via an x-ray diffraction pattern.

Germany : Dynamic aspirin - first and direct insight in electrons motions

where D is the crystallite size, K is the shape factor (K=0.9), [lambda] is the wavelength of the X-rays (for CuK[alpha] radiation), [[theta].sub.hkl] is the Bragg diffraction angle ([degrees]) and [[beta].sub.hkl] is the broadening of the hkl diffraction peak measured at half of its maximum intensity (in radians).

Fabricacion de celdas solares basadas en peliculas de [Cu.sub.2]ZnSn[S.sub.4] crecidas con homogeneidad de composicion quimica optimizada

The interdependence of the crystallite size D and lattice strain Iu (Fig.

First-Step Anodization of Commercial Aluminum in Oxalic Acid: Activation Energy of Rate Process and Structural Features of Porous Alumina and of Aluminum Substrate as a Function of Temperature

Using the Rietveld refinement and Warren-Averbach method [24, 25] in the frame of MAUD software [31], a detailed analysis of XRD profiles can be performed leading to the determination of phase composition in addition to structural and microstructural parameters for each phase, such as lattice parameters (a, b, c), the average crystallite size <L>, microstrain [<[[epsilon].sup.2]>.sup.1/2], and stacking fault probabilities (SFP).

Influence of Milling Time on Structural and Microstructural Parameters of [Ni.sub.50][Ti.sub.50] Prepared by Mechanical Alloying Using Rietveld Analysis

The average crystallite size and crystal phase of calcium carbonate obtained from seashells were determined using X -ray diffraction analysis.

Quality (nanoscale) assessments of calcium carbonate present in shells of Anadara granosa, and Crassostreao virginica marine species located in the coastal part of South India

The average sizes of the crystallites, determined qualitatively by application of the Scherrer equation, were on the nanoscale.

Rice Husk Ash Modified with Vanadium Pentoxide

From Fig.2 it is revealed that as the sintering temperature increased from 60 to 800[degrees]C, several of the HA peaks become more distinct and narrower signifying an increase in the crystallite size and crystallinity confirming the important role of sintering.

Surface Modification of Nano-Hydroxyapatite Using Bisphosphonate Moieties: Effect on Morphology and Crystalline Nature at Higher Temperature

As seen in Figure 1, T1W exhibits small crystallite size of anatase phase.

W[O.sub.3]-Doped Ti[O.sub.2] Coating on Charcoal Activated with Increase Photocatalytic and Antibacterial Properties Synthesized by Microwave-Assisted Sol-Gel Method

The results of the structural studies revealed that all samples had crystallites in the nanosize range; [Cu.sup.2+] addition into the Ti[O.sub.2] increases the crystallite size which maybe due to the replacement of [Ti.sup.4+] ions by [Cu.sup.2+] ions which have a higher ionic radius.

Synthesis and Characterization of CuO, Ti[O.sub.2], and CuO-Ti[O.sub.2] Mixed Oxide by a Modified Oxalate Route

In terms of the FWHM, all samples experienced increase in crystallite sizes after annealing, with the samples grown at 1445 mV and 1450 mV showing the highest crystallite size of 63.02 nm.

Characteristics of Nanocrystallite-CdS Produced by Low-Cost Electrochemical Technique for Thin Film Photovoltaic Application: The Influence of Deposition Voltage

X-ray diffraction shows that the synthesized ZnO nanoparticles have hexagonal crystal structure with an average crystallite size of 29 nm.

Synthesis and Characterization of Zinc Oxide Nanoparticles for Antibacterial Applications

Where D is crystallite size (in nm), [lambda] is the radiation wavelength (for CuK[alpha] radiation, [lambda] 1.5406[Angstrom]), [theta] is the diffraction peak angle and [beta] is the broadening of the line ("half width") measured at half its maximum intensity (in radians).

Synthesis of NiO-Ni[Al.sub.2][O.sub.4] oxygen carriers by solution combustion method using palm oil derived fuel for chemical looping combustion