Growth of polycrystalline hydroxyapatite thin films by pulsed laser deposition and subsequent heat treatment in air
- 2 July 1998
- conference paper
- Published by SPIE-Intl Soc Optical Eng
- Vol. 3405, 218-224
- https://doi.org/10.1117/12.312755
Abstract
Hydroxyapatite (HA), Ca10(PO4)6(OH)2, is the primary constituent of the human bone and one of the best biocompatible materials. In this work we developed a simple method for the deposition of polycrystalline HA thin films onto various collectors including substrates of medical interest (e.g. Ti). We proceeded by the pulsed laser deposition of HA targets onto parallel collectors placed at (2-5) cm in vacuum. After deposition the films were heated in air at 500 degree(s)C for 30 minutes. The heated film has a structure which appears in electron diffraction as identical to the structure of the base material. The obtained films are uniform and very adherent to the substrate. The P/Ca atomic ratio, determined by energy dispersive X-ray analysis, was found to be close to that characteristic to HA, for the post-depositing heated films.Keywords
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