coni nanowires were deposited by pulsed electrodeposition technique into porous alumina templates. the effect of off time between pulses (toff) and reductive/oxidative time (treduc/oxid) on the microstructure and magnetic properties of the coni nanowires were investigated. maximum coercivity and squareness were obtained for samples fabricated at treduc/oxid= 0.5 ms and toff =400 ms. the coerciv...

Overview: Stability experiments indicate that amorphous sulfate phases may be important constituents of martian surface materials [1-2]; there is also considerable spectral evidence for non-crystalline sulfate phases on Europa [3-4]. However, the thermal infrared (TIR) and near-infrared (NIR) spectral characteristics of these phases are largely unknown. X-ray amorphous Mg-and Fe-sulfate phases ...

Ternary iron-boron-based bulk metallic glasses sBMGsd were explored exhibiting capability of thick amorphous casting at least 1 mm in rod diameter or 0.5 mm in plate thickness, excellent soft magnetic properties with saturation magnetization 1.56 T and coercivity smaller than 40 A/m, and electrical resistivity larger than 200 mV cm. The BMG alloys represented by the formulas MaFebBc are based o...

Magnetic properties of as-prepared (sputtered) and annealed Fe,Sil-, (0.64 5 x 5 0.78) amorphous films deposited at room temperature, are interpreted in terms of chemical short-range order and compared with evaporated films deposited at 77 K. Low temperature ( 5 30 K) magnetization behaviour follows; M (T) / M (0) = 1 B T ~ / ~ c T ~ / ~ 2 with B = 1.5 x K ~ / ~ ; C = -2.610 x ~ K ~ / ~ . Relat...

oxide nanoparticles of fe-co-ni were prepared in six different compositions by co-precipitation method. the as-synthesized nanoparticles were characterized by x-ray diffraction (xrd), field emission scanning electron microscope (fesem), fourier transform infrared (ft-ir) and vibrating sample magnetometer  (vsm). it was found that the nanoparticles had mean crystalline size of 30-55 nm and spher...

By analyzing first-principles molecular-dynamics simulations of different telluride amorphous networks, we develop a method for the enumeration of radial and angular topological constraints, and show that the phase diagram of the most popular system Ge-Sb-Te can be split into two compositional elastic phases: a tellurium rich flexible phase and a stressed rigid phase that contains most of the m...

The structure of amorphous silicon in its pure and hydrogenated form has attracted wide interest over the last five decades. This substantial interest is twofold. Firstly, amorphous silicon is a technologically highly significant material with many applications such as photovoltaic cells or thin-film transistors. Secondly, physically it is a fundamentally interesting material which has been reg...

The idea of treating phonon transport as equivalent to transport through a gas of particles is termed the phonon gas model (PGM), and it has been used almost ubiquitously to try and understand heat conduction in all solids. However, most of the modes in disordered materials do not propagate and thus may contribute to heat conduction in a fundamentally different way than is described by the PGM....