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http://repositorio.ufc.br/handle/riufc/67705
Tipo: | Artigo de Periódico |
Título : | Magnetic properties study on Fe-doped calcium phosphate |
Autor : | Silva, Cleiton Carvalho Vasconcelos, Igor Frota de Sombra, Antônio Sérgio Bezerra Valente, Manuel Almeida |
Palabras clave : | Magnetic properties;Calcium phosphates;Diffraction (XRD) and magnetization;iron in the hydroxyapatite structure |
Fecha de publicación : | 2009 |
Editorial : | Physica Scripta |
Citación : | SILVA, Cleiton Carvalho et al. Magnetic properties study on Fe-doped calcium phosphate. Physica Scripta, [s. l.], v. 80, n. 5, p. 1-5, 2009. |
Abstract: | Calcium phosphates are very important for applications in medicine due to their properties such as biocompatibility and bioactivity. In order to enhance these properties, substitution of calcium with other ions has been proposed. Partial substitution of calcium by different ions has been made in order to improve the properties of the calcium phosphates and also to allow new applications of apatite in medicine. In this work, hydroxyapatite [Ca10(PO4)6(OH)2—HAP] was prepared by high-energy dry milling (20 h) and mixed with iron oxide (5 wt.%). The mixture was calcinated at 900 ◦C for 5 h with a heating rate of 3 ◦C min−1 in an attempt to introduce iron oxide into the HAP structure. The sintered sample was characterized using x-ray diffraction (XRD) and magnetization. The 57Fe-Mössbauer spectra of the calcium phosphate oxides were also measured, revealing the presence of iron in three different phases: Ca2Fe2O5, Fe2O3 and hydroxyapatite. |
URI : | http://www.repositorio.ufc.br/handle/riufc/67705 |
ISSN : | 1402-4896 |
Aparece en las colecciones: | DEMM - Artigos publicados em revista científica |
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