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- W2353211969 abstract "For the purpose of exploring the potential application of magnetic hydroxyapatite(HA) composite particles in treatment the osteoporosis due to lack of stress stimulus,a novel method was employed to fabricate HA/Fe3O4 composite particles with good bioactivity and superparamagnetism.The nano-iron oxide(Fe3O4) slurry synthesized by chemical precipitation was used as substrate in Ca,P solution to deposite HA on the Fe3O4 spheres through slowly increase of pH by decomposition of urea using urease as the catalytic.X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),X-ray energy dispersive spectroscopy(EDX),vibrating sample magnetometer(VSM) and the magnet were used to characterize the substrate and the resultant samples.The results show that:it's a good method to prepare the superparamagnetic hydroxyapatite composite which has better magnetic performance by using the nano-iron oxide(Fe3O4) slurry as substrate and the Ca,P solution of certain concentration(the Ca/P ratio of 5∶3;Ca/Fe ratio of 5∶3) containing the sodium chloride as the media,reacting in water bathing at 37 ℃ for 48h.The saturated magnetization(Ms) of the composite sample is 7.23A·m2/kg,the remanence(Mr) is 0.073A·m2/kg and the coercivity(Hc) is 261.08A/m." @default.
- W2353211969 created "2016-06-24" @default.
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- W2353211969 date "2012-01-01" @default.
- W2353211969 modified "2023-09-23" @default.
- W2353211969 title "Preparation and characterization of the magnetic hydroxyapatite composite" @default.
- W2353211969 hasPublicationYear "2012" @default.
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