Table 3 The crystal structure, lattice parameters, unit cell volume, and crystallite size of the samples.

From: Effect of cobalt ions doping on morphology and electrochemical properties of hydroxyapatite coatings for biomedical applications

Sample code

Crystal structure

Lattice constants (Å)

Unit cell volume (Å3)

\({\langle \text{D}\rangle }_{\text{XRD}}\)

\({\langle \text{D}\rangle }_{\text{SEM}}\)

a = b

c

(nm)

(nm)

Pure HA

Hexagonal

9.42

6.87

527.94

17.68 ± 1.02

41.55 ± 5.9

HA/T

Hexagonal

9.40

6.86

524.94

16.53 ± 0.96

40.09 ± 3.9

5Co/HA/T

Hexagonal

9.35

6.87

520.12

14.81 ± 1.65

35.13 ± 5.1

10Co/HA/T

Hexagonal

9.32

6.84

514.53

11.23 ± 0.86

27.40 ± 4.2

20Co/HA/T

Hexagonal

9.36

6.84

518.96

12.63 ± 1.23

29.86 ± 5.4

Standard pure HA

Hexagonal

9.41

6.88

528.80

–

–

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