Journal of Materials Science

, Volume 41, Issue 13, pp 4273–4284 | Cite as

Composition and crystal structure of resorbable calcium phosphate thin films

  • L. TuckEmail author
  • M. Sayer
  • M. Mackenzie
  • J. Hadermann
  • D. Dunfield
  • A. Pietak
  • J. W. Reid
  • A. D. Stratilatov


Silicon stabilized tricalcium phosphate (Si-TCP) is formed, among other phases, as a result of sintering hydroxyapatite (HA) in the presence of silica (SiO2) at >800°C. Calcium phosphate films sintered at 1000°C on quartz substrates are examined with and without additional SiO2 added to the starting precipitate. Data from transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) separate the undoped film morphology into a surface layer with a monoclinic crystal structure P21/a characteristic of α or Si-tricalcium phosphate and grain size in the range 100–1000 nm and a substrate layer with a crystal structure which is predominantly apatitic P63/m and grain size in the range 30–100 nm. The silicon content is greatest in the substrate layer. The addition of SiO2 to the film material during fabrication induces a more uniform grain size of 10–110 nm and a higher Si content. The structural and phase evolution of these films suggests the nucleation of α-TCP by the local formation of Si-TCP at a SiO2-hydroxyapatite interface. The results are consistent with X-ray diffraction studies and are explained by a model of nucleation and growth developed for bulk powders.


Calcium Phosphate Quartz Substrate Electron Energy Loss Spectroscopy Substrate Layer Tricalcium Phosphate 


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Copyright information

© Springer Science + Business Media, Inc. 2006

Authors and Affiliations

  • L. Tuck
    • 1
    Email author
  • M. Sayer
    • 1
  • M. Mackenzie
    • 2
  • J. Hadermann
    • 3
  • D. Dunfield
    • 1
  • A. Pietak
    • 1
  • J. W. Reid
    • 1
  • A. D. Stratilatov
    • 1
  1. 1.Department of PhysicsQueen’s UniversityKingston OntarioCanada
  2. 2.Department of Physics and AstronomyUniversity of GlasgowGlasgowUK
  3. 3.University of AntwerpAntwerpBelgium

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