Synthesis, Structure, and Luminescent Properties of Europium-Doped Hydroxyapatite Nanocrystalline Powders

Figure 4

SEM images and the EDS of the Eu:HAp samples synthesized with Eu/(Ca + Eu) = 1% (Hap_E1), 2% (HAp_E2), 10% (HAp_E10) and 20% (HAp_E20).

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)