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Iron oxides, magnetite Fe3O4 and hematite Fe2O3 were laser-deposited onto Al substrates at various temperatures, and the Mossbauer spectra of the films were measured. The compositions of the films changed depending on the formation temperature of the substrate, oxide deficiency in the lattice structures and the formation process of the iron oxides. The films were composed of Fe3−x O4 and Fe1−x O independent of the laser-evaporation source (magnetite or hematite). Fe3−x O4 was seen to be dominant at higher temperatures and Fe1−x O was dominant at lower temperatures. The compositions of the films were confirmed by X-ray diffraction (XRD) measurements, and the surfaces of the deposited films were examined using scanning electron microscopy (SEM).

Summary Pyrite FeS2 was laser-deposited onto Al substrates at various temperatures, and the Mossbauer spectra of the films were measured. The yields and the Mossbauer parameters of FeS2 and FeS changed depending on the formation temperature, because of the sulfur deficiency in the lattice structures. In addition, hematite Fe2O3 was employed as a laser-ablation target, and FeO and Fe2O3 were deposited on SiO2/Si substrates. It was shown that laser-deposition of compounds can produce films that have different chemical species than the laser-evaporated materials.

Iron films deposited on Al substrates were investigated using Mossbauer spectroscopy and scanning electron microscopy. It was found that the nuclear spin orientation of iron films produced by depos...