A process has been developed for obtaining closed cell metallic foams using a ceramic foam precursor. In the present study, the major constituent of the ceramic foam precursor was iron oxide (Fe2O3), which was mixed with various foaming/setting additives. The mixture set rapidly at room temperature, stabilizing the foam generated by hydrogen release. The oxide foam was then reduced by annealing...

We report studies of exchange bias and coercivity in ferromagnetic Ni81Fe19 layers coupled to antiferromagnetic (AF) (0001), (112̄0), and (110̄2) α-Fe2O3 layers. We show that AF spin configurations which permit spin-flop coupling give rise to a strong uniaxial anisotropy and hence a large coercivity, and that by annealing in magnetic fields parallel to specific directions in the AF we can control...

Magnetic metal (Mn, Fe, Co, and Ni) oxides nanocrystals with small size and uniform size distribution are synthesized via a cation-exchange reaction. Two experimental stages are included in the synthesis of metal oxides nanocrystals. Firstly, Cu(OH)2 decomposes to CuO nanocrystals, induced by free metal cations. Compared to CuO nanocrystals produced without any free metal cation, the free metal...

The changes of the phase composition of iron oxide samples prepared by solgel method using single precursor both for nanoparticles and the matrix were studied by x-ray diffraction. Obtained data were analyzed by an approach using the Debye formula which is suitable for the size of particles up to about 10 nm. The phase composition of the nanoparticles was described by a core-shell model corresp...

The unique property of phosphate-based glasses and fibres to be completely dissolved in aqueous media is largely dependent on the glass composition. This article focuses on investigating the effect of replacing Na2O with 3 and 5 mol% Fe2O3 on cytocompatibility, thermal and dissolution properties of P2O5-CaO-Na2O-MgO-B2O3 glass system, where P2O5 content was fixed at 45 mol%. The effect of incre...