Fine structure of annealed Fe-Co magnetic double-layer.

Magnetic Studies of Fine Fe And Co Species Formed in Fe/Zeolite Catalysts

Magnetic, Mössbauer, and I.R. studies of nanosize particles of Fe and Co species dispersed in a cage of aluminosilicates structure, in relation to syngas (CO+H2) Fischer Tropsch conversion. The difference in the catalytic activity of such species have shown dependancy on their degree of dispersion. The carbonyl impregnation gave ultra-fine Super Paramagnetic Fe3O4, whereas the nitrate impregnat...

Structure and Magnetic Properties of Oxide Nanoparticles of Fe-Co-Ni Synthesized by Co-Precipitation Method

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...

structure and magnetic properties of oxide nanoparticles of fe-co-ni synthesized by co-precipitation method

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...

Magnetic viscosity and switching volumes of annealed Fe/Pt multilayers

Annealed Co thin films: Pit formation and magnetic anisotropy

We present a study of the morphological and magnetic transformation of hcp~0001! Co thin films, grown via sputtering on Al2O3(112̄0), which occurs when they are annealed in vacuum in the temperature range of 500 °C,TA,600 °C. In this temperature range, the films undergo a reentrant smoothening transition. For very thin films ~thickness t,20 nm!, this coincides with a fcc~111! to fcc~001! recryst...