Figure 8

MD simulated dynamic changes in distance between Ca²⁺ and P⁵⁺ ions with uniaxial tensile strain, for different doped HA at T = 10 K. The distance has been defined schematically in the inset. Atomic colour code: Ca: pale blue, O: red, P: golden-yellow. (Sample designation: xFeHA means x mol% Fe²⁺-doped HA).