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.