Calcium Apatites and Other Calcium Orthophosphates - Calcium Orthophosphates: Applications in Nature, Biology and Medicine - page 13

β -TCP rhombohedral

R

a = b = 10.4183(5), c = 37.3464(23) Å, γ = 120° 21 [b] 3.08

3cH

HA monoclinic /b

or hexagonal
P

P 2 a = 9.84214(8), b = 2 a , c = 6.8814(7) Å, γ 4

2

3.16

1

= 120° (monoclinic) a = b = 9.4302(5), c =

6 /m 6.8911(2) Å, γ = 120° (hexagonal) 3

FA hexagonal P 6 /m a = b = 9.367, c = 6.884 Å, γ = 120° 2 3.20 3

—

OA hexagonal P a = b = 9.432, c = 6.881 Å, α = 90.3°, β = 90.0°, 1 ~3.2

γ = 119.9°

TTCP monoclinic P 2 a = 7.023(1), b = 11.986(4), c = 9.473(2) Å, β 4 3.05

1

= 90.90(1)°

[a]

Number of formula units per unit cell.

[b]

Per the hexagonal unit cell.