Facile Synthesis, Characterization, and Cytotoxic Activity of Europium-Doped Nanohydroxyapatite

Table 2

Rietveld analysis results.

	Refined cell parameters
Sample	a; ()	c; ()	Crystallite size (nm)
HAP	9.4224	6.8928	159.85
HAPEu3%	9.4168	6.8898	133.29
HAPEu5%	9.3771	6.8636	156.58
HAPEu10%	9.3533	6.8644	237.75
HAPEu20%	9.3638	6.7994	176.84