Nifiltered
Cu Ka radiation (k = 0.15406 nm) was generated at a voltage
of 36 kV and a current of 20 mA and scanned at speed of
0.02/s from 10 to 40. The CrI was estimated using the intensity
of the 200 peak (I200, h = 22.5) and the intensity at the minimum
between the 200 and 110 peaks (Iam, h = 18.5) as follows:
CrI = 100 (I200 Iam)/I200. I200 represents both crystalline and
amorphous materials while Iam represents amorphous material.
The standard error of the CrI method was detected at ±0.05–0.15
using five representative samples in triplicate.