Table 1.

Lattice properties of HAp and HAp/clay nanocomposites.

Samples	FWHM (°)	Parameter			Crystallite size (nm)
		a (nm)	c (nm)	V (nm)
HAp (JCPDS no. 09-432)	–	0.9418	0.6884	–	–
HAp	0.116	0.9416	0.6882	1.569	82
HAp + 10% Clay	0.1014	0.9427	0.6873	1.570	79
HAp + 20% Clay	0.1021	0.9424	0.6871	1.572	76
HAp + 30% Clay	0.1024	0.9433	0.6868	1.577	72
HAp + 40% Clay	0.1032	0.9435	0.6862	1.580	69