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FT-Raman-Spectroscopic Study on the Luminescence of Synthetic and Mineral Apatites |
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| Authors: | Petra Meuer Axinja Wolf Ralf Hansch Martin Okrusch Jürgen Popp Uwe Posset Wolfgang Kiefer |
| Affiliation: | Institut für Physikalische Chemie, Universit?t Würzburg, Am Hubland, D-97074 Würzburg, Germany, DE Institut für Mineralogie und Kristallstrukturlehre, Universit?t Würzburg, Am Hubland, D-97074 Würzburg, Germany, DE Fraunhofer-Institut Silicatforschung, Neunerplatz 2, D-97082 Würzburg, Germany, DE |
| Abstract: | 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. |
| Keywords: | : FT-Raman spectroscopy NIR excitation luminescence calcium phosphate apatite. |
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