We report on the magnetic properties of epitaxial cobalt-ferrite films with orientations parallel to [001] and [111] grown by a reactive molecular beam epitaxy method using pure ozone gas as an oxidation agent. Both Mössbauer spectroscopy and magnetization measurement of the CoFe2O4(001) film grown on MgO(001) indicate that the film has perpendicular magnetic anisotropy (PMA) with high coercivity, whereas the film of CoFe2O4(111) grown on α-Al2O3(0001) appears to be paramagnetic. The maximum uniaxial anisotropy energy for CoFe2O4(001) estimated from the magnetization and coercivity at room temperature is ≈3×106 erg/cm3.

We studied the possibilities of the coincidence method for investigation of the influence of the Coulomb interaction in the final state on electron emission spectra in the vicinity of autoionising resonances. The triple differential cross section, allowing for the Coulomb interaction in the final state in the direct and resonance amplitudes, has been calculated for the ionisation of helium by protons with energies of 100 and 300 keV.