Publication: Incorporation of iron into nano hydroxyapatite particles synthesized by the microwave process
Issued Date
2007-02-01
Resource Type
ISSN
0219581X
Other identifier(s)
2-s2.0-34047201153
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
International Journal of Nanoscience. Vol.6, No.1 (2007), 9-16
Suggested Citation
Weeraphat Pon-On, Siwaporn Meejoo, I. Ming Tang Incorporation of iron into nano hydroxyapatite particles synthesized by the microwave process. International Journal of Nanoscience. Vol.6, No.1 (2007), 9-16. doi:10.1142/S0219581X07004262 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/24252
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Incorporation of iron into nano hydroxyapatite particles synthesized by the microwave process
Author(s)
Abstract
This research focuses on understanding the nature of the Fe ions substituted in hydroxyapatite ((HAP) Ca10-xFex(PO4)6(OH)2-xÿx: x = 0, 0.2 and 0.4) powder synthesized at temperatures between 500°C and 1000°C and their crystallization. The DSC scan indicates a solid state phase transition at about 757°C for the as-prepared powder HAP. The transformation of HAP to β-tricalcium phosphate (β-TCP, β-Ca3(PO4)2) is seen when the powder were heated to 750°C. The sizes of the crystallites were determined to be about 46-51 nm, 33-40nm and 33-59 nm for Fe content of 0, 0.2 and 0.4mol%, respectively. The ESR parameters for the Fe3+ions, g = 4.23 and 8.93 indicated that the ions were subjected to a rhombic ion crystal field within the HAP structures. The g values of ∼2.01 indicated that the particles were super-paramagnetic and ferromagnetic iron nanoparticles, having an average size about 0.2-0.5 μm in length. © World Scientific Publishing Company.