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FT-Raman-spectroscopic study on the luminescence of synthetic and mineral apatites

: Meuer, P.; Wolf, A.; Hansch, R.; Okrusch, M.; Popp, J.; Posset, U.; Kiefer, W.


Mikrochimica Acta 133 (2000), Nr.1-4, S.203-207
ISSN: 0026-3672
Fraunhofer ISC ()

Strong luminescence bands can be present in NIR-excited FT-Raman spectra of certain inorganic materials like hydroxyapatite. Since the origin of these emissions exclusively occurring on NIR-excitation is still unclear, a variety of synthetic and mineral apatites and related calcium salts was studied by means of Stokes and anti-Stokes FT-Raman spectroscopy, X-ray diffraction, and geochemical analyses. The results indicate that the occurrence of the luminescence is in some way related to foreign ion contents. However, a direct correlation to a specific ion could not be found on the basis of available data.