Preparation and Properties of Magnetic Bioactive Glass-ceramics Doped with Mn-Zn Ferrite

doi:10.3724/SP.J.1077.2008.00621

Abstract

Abstract: Novel magnetic bioactive glass-ceramics (MGC) in the system MgO-CaO-SiO₂-P₂O₅-CaF₂-MnO-ZnO-Fe₂O₃were synthesized by doping Mn-Zn ferrite in apatite-wollastonite glass-ceramics (A-WGC). The effect of preparation methods on the magnetic performance and bioactivity of MGC was studied. The results show that apatite, wollastonite, flourapatite and Zn_0.75Mn_0.75Fe _1.5O₄ are the main phases of MGC. Under a magnetic field of 7.96×10⁵A·m^-1, the saturation magnetization of MGC fabricated by different ways ranges from 5.4A·m²·kg^-1 to 5.9A·m²·kg^-1. Mn-Zn doping ferrite decreases the bioactivity of A-WGC. It takes at least 14d for a hydroxyapatite layer forming on the surface of MGC. Comparing with all the materials, the sample synthesized by mixing the heated A-WGC precursors with Mn-Zn ferrite precursor has proper magnetism and best bioactivity.

Key words: Mn-Zn ferrite, magnetic bioactive glass-ceramics, bioactivity

CLC Number:

R318

LI Guang-Da,ZHOU Da-Li,FENG Dan-Ge,MAO Mao,GUO Yan,LI Shao-Min. Preparation and Properties of Magnetic Bioactive Glass-ceramics Doped with Mn-Zn Ferrite[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2008.00621.

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Preparation and Properties of Magnetic Bioactive Glass-ceramics Doped with Mn-Zn Ferrite

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