Table 1.

ID/IG ratio, FWHM(G) and La values calculated by means of eqs (1) and (2) for the various samples.

Sample	ID/IG	FWHM (G) (cm−1)	La from eq. 1 (nm)	La from eq. 2 (nm)
A	0.90	47	14	14
B	1.40	54	10	11
C	1.16	62	11	12
D	0.84	43	15	15