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Monodispersed octahedron Fe3O4 particles have been directly synthesised on a large-area iron substrate using a template-free hydrothermal route. X-ray diffraction, scanning electron microscopy and vibrating sample magnetometer were used for the structural, morphological and magnetic characterisation of the products, respectively. The influence of the concentration of NaOH solution on the size and...
Micro/nanostructured α-Fe2O3 microcubes were obtained by a facile template-free hydrothermal route. The as-obtained products were characterised by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and vibrating sample magnetometry. It is shown that the cubic structures are consisted of well-aligned α-Fe2O3 nanoparticles with a mean diameter of about 15 nm. Magnetic...
Nano Sc2O3-doped W powder for use in high current density thermionic cathodes has been made by the sol-gel method with different average particle size: around 72 nm, 146 nm, 272 nm, and 587 nm, respectively. By using these powders, Sc2O3-doped tungsten matrices with the nanosize tungsten grains were obtained as discussed in this paper. Sc2O3-doped W matrix impregnated cathodes have shown excellent...
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