54 [Angstrom]), [PHI] is the full width at half-maximum of the diffraction peak, and [theta] is the Bragg angle
Table 2 summarizes the Bragg angle position and inter layer spacing of clay in all PPCN calculated from (001) diffraction peaks.
The XRD peak of PP1-2 remains in the same Bragg angle position as pure OMMT, since only the phase-separated conventional micro composite is formed.
XRD results clearly show the shifting of all peaks to a lower Bragg angle when AA of increasing concentration is incorporated into the PP-clay composites (in comparison with the original OMMT).
Interlayer spacing Composite material Bragg angle (2[theta]) ([d.
An increase in D dictates a large Bragg angle
Both (a) and (b) show a predominantly downward trend with increasing Bragg angle, [theta] (1,2).
Spectrometer efficiency also varies strongly as a function of Bragg angle (see Sec.
For short radius of curvature, the angle of reflection will change appreciably as a function of depth below the crystal surface leading to an exponentially decreasing tail on the low Bragg angle side.
The effect of the Bragg angle on the shape of an x-ray peak is illustrated in Figs.
At high Bragg angles ([theta]>>35[degrees]) or for high absorption of the incident photons, only the outer surface of the crystal reflects the beam and the crystal behaves as a perfect crystal and second term in Eq.