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Effect of Mn–Zn ferrite on apatite–wollastonite glass-ceramic (A–W GC)
- Source :
- Biomedical Materials. 4:045001
- Publication Year :
- 2009
- Publisher :
- IOP Publishing, 2009.
-
Abstract
- Magnetic bioactive glass-ceramics (M GC) were prepared by doping apatite-wollastonite glass-ceramic (A-W GC) with Mn-Zn ferrite. The effect of different contents of Mn-Zn ferrite on the phase structure, magnetic property and bioactivity of A-W GC was investigated. X-ray powder diffraction results showed that A-W GC exhibited apatite, fluorapatite and wollastonite as the main phases. The doping of Mn-Zn ferrite caused the formation of a new phase Zn(0.75)Mn(0.75)Fe(1.5)O(4) in M GC. The amount of this new phase increased with increasing content of Mn-Zn ferrite. Under a magnetic field of 7.96 x 10(5) A m(-1), the saturation magnetization of M GC increased from 4.63 to 9.7 A m(2) kg(-1), but the coercive forces of M GC decreased from 2.39 x 10(4) to 7.56 x 10(3) A m(-1) as the Mn-Zn ferrite content increased from 5% to 20% in the material. The bioactivity of samples was evaluated by soaking in simulated body fluid (SBF). The results showed that the doping of Mn-Zn ferrite decreased the bioactivity of A-W GC dramatically. It took 7 days for an apatite layer to form on the surface of A-W GC, while at least 30 days was needed for an apatite layer forming on the surface of M GC.
- Subjects :
- Ceramics
Time Factors
Materials science
Simulated body fluid
Biomedical Engineering
Mineralogy
Biocompatible Materials
Bioengineering
engineering.material
Ferric Compounds
Wollastonite
Apatite
law.invention
Biomaterials
Magnetics
X-Ray Diffraction
law
Apatites
Materials Testing
Glass-ceramic
Silicates
Fluorapatite
Doping
Calcium Compounds
Body Fluids
visual_art
Microscopy, Electron, Scanning
visual_art.visual_art_medium
engineering
Ferrite (magnet)
Powders
Powder diffraction
Nuclear chemistry
Subjects
Details
- ISSN :
- 1748605X and 17486041
- Volume :
- 4
- Database :
- OpenAIRE
- Journal :
- Biomedical Materials
- Accession number :
- edsair.doi.dedup.....8ba17b256044949740f14a9946253b67