Nanoscale phase separation in Fe304(l 11) films on sapphire(0001) and phase stability of Fe304(001) films on MgO(001) grown by oxygen-plasma-assisted molecular beam epitaxy We report a phase instability in oxygen-plasma-assisted molecular beam epitaxy of Fe304 films on sapphire (0001) substrates. Under a wide range of growth conditions, Fe304 (111) films phase separate, on a nanometer length sc...

Magnetic nanoparticle Fe304 have super paramagnetic, biological cell compatibility, low toxicity, antibiosis and bacteriostasis, drug loading, sustained release thermal effect. Using magnetic nanoparticies as source, masoporous glass two-dimensional bone framework was synthesized under the action of external field, which provides growth space for repair, proliferation metabolism, contribute to ...

Magnetite (Fe304) nanoparticles stabilised by sulfonatocalixarene macrocycles are readily accessible by a rapid in situ co-precipitation, and exhibit ferro-fluidic and superparamagnetic behaviour.

Conventional electrochemical sensor electrodes have poor electrical conductivity due to their large surface impedance. Therefore, sensing of carbon-coated metal oxide nanoparticles is proposed. Based on the experimental preparation, preparation Fe304@C and sensors required for experiment were completed by using chemicals reaction instruments. The Fe304@C/SPEs studied tested in a three-level sys...

A conducting-electroactive polyaniline/magnetite (PAni/Fe304) nanocomposite was synthesized using anilinium dodecylbenzene sulfonate (S1) as a reactive surfactant. First, S1 allowed magnetite dispersion in the aqueous phase and second, S1 performed as the monomer of polyaniline emeraldine base salt. Electron microscopy suggested core-shell morphology based on S1 amphiphilic character; that is, ...

The amount of magnetite (Fe304) within mag­ netosomes of the microaerophilic bacterium AquQspirillum magnetotacticum varies with oxygen and nitrogen supply. The development of optical methods for directly measuring cell magnetism in culture samples has enabled us to quantitate bacterial Fe304 yields. We measured final cell yields. average cell magnetic moments, and magnetosome Yields of growing...

Magnetotactic bacteria navigate along geomagnetic field lines. By tt is means they find and stay in their preferred habitat and avoid the toxic effects of oxygen. Cells contain single-magnetic-domain Fe304 particles which are resporsible for their magnetotactic response. Numerous Fe 0 particle organized in (hains have recently been found in eukaryotic cells, edglenoid, motile, magnetot ctlc alg...

The influence of prolonged ball milling on structural changes of hexagonal and spinel type complex iron oxides has been studied by x-ray diffraction and high resolution electron microscopy. The XRD and HREM results for ball milled SrFel2Olg ferrite show fast decomposition and formation of Fe203 and SrO simple oxides. Microstructural developments for a powder mixture of Co(OH)2 and Fe203 show th...

In this research, the Magnetite nanoparticles (Fe304) were prepared by coprecipitation of Fe3+ andFE solution in alkaline medium. Two kinds of surfactants, cetyl tri methyl ammonium bromide(CTAB) and cetyl pyridinum chloride (CPC) were used in the synthesis. Fe304 Nanoparticles werecoated with human serum albumin (HSA) and bovine serum albumin (BSA). Characteristics ofcoated magnetic nanopartic...

in this research, the magnetite nanoparticles (fe304) were prepared by coprecipitation of fe3+ andfe solution in alkaline medium. two kinds of surfactants, cetyl tri methyl ammonium bromide(ctab) and cetyl pyridinum chloride (cpc) were used in the synthesis. fe304 nanoparticles werecoated with human serum albumin (hsa) and bovine serum albumin (bsa). characteristics ofcoated magnetic nanopartic...