. Author manuscript; available in PMC: 2018 Nov 1.

Published in final edited form as: J Solid State Chem. 2017 Jul 25;255:27–35. doi: 10.1016/j.jssc.2017.07.025

Table 2.

Apatite lattice spacing along the a-axis and the c-axis for apatite samples with different types of carbonate substitution. A-type, B-type, and combined AB-type are presented, as well as the percentage change with respect to the non-carbonated standard HAp (NIST).

Sample	Lattice parameters (Å)

	a	c
HAp (NIST)	9.423	6.889
A-CAp	9.552 (+ 1.4%)	6.865 (− 0.3%)
AB-CAp3	9.449 (+ 0.3%)	6.893 (+ 0.06%)
B-CAp	9.383 (− 0.4%)	6.893 (+ 0.06%)

Carbonate wt%: A-CAp (4.90%); B-CAp (5.73%); AB-CAp (A-type 3.60%, B-type 2.45%)