Lithium substitution in strontium chlorapatite studied by solid state NMR spectroscopy

Strontium Chlorapatites with various amounts of Li substitution (Sr10-xLix(PO4)6Cl2-δ) were prepared by solid state reaction method and characterized by powder XRD and solid state NMR spectroscopy. XRD reveals shortening of lattice parameters upon Li incorporation. The linewidth of 31P solid state Magic Angle Spinning NMR spectra decreases with increase in Li content within the apatite phase. This study confirms Li uptake within the apatite phase.