Magnetic and transport properties of ion‐beam‐mixed amorphous Fe‐Zr alloys (abstract)

Ion‐beam mixing has become a new and powerful technique to amorphize alloys systems in an extended concentration range while at the same time providing much more homogeneous films. In this paper we will present magnetic, thermal, and glavanomagnetic property studies on binary Fe‐Zr amorphized alloys produced by irradiating multilayers of evaporated Fe‐Zr crystalline films with Kr, Xe, and/or Ar ions at 500 keV with doses of 2×1016 ions/cm2. The final compositions of the amorphized films, containing 10–27 at. % Zr, were determined from Rutherford backscattering measurements. Further characterization of these x‐ray amorphous films have been carried out using TEM and Mossbauer techniques. Comparison with melt‐spun amorphous alloys reveals that the frequently quoted model for amorphization in ion‐irradiation experiments of fast quenching spikes is questionable. From low‐field ac‐susceptibility data we obtain the magnetic phase diagram which is then compared with that obtained for melt‐spun alloys. All the ion...