Hydrogenated FeTi superlattices studied by hydrogen depth profiling, Mössbauer spectroscopy and X-ray diffraction

Abstract

Hydrogenated FeTi superlattices have been studied by hydrogen depth profiling, using the ¹⁵N method, conversion electron Mössbauer spectroscopy and X-ray diffraction. The modulation wavelength of the sample was 40 nm and the ratio of the titanium to iron thicknesses was equal to three. It was found that mixing of the iron and titanium layers occurred during the annealing and hydrogenation procedure but that the superlattice structure was preserved. The latter result was explained by the negligible solubility of iron in titanium.