Mössbauer spectroscopy of hydrogenated Fe91Zr9 amorphous alloys

Abstract The influence of hydrogen on the Mossbauer spectra of the Fe 91 Zr 9 amorphous alloy at 4.2 K is reported. The hydrogen concentration dependence of the hyperfine magnetic field and the isomer shift is discussed. Both parameters exhibit relevant changes. The maximum uptake of hydrogen is about 2 x where x is the Zr concentration. The volume contribution is estimated and discussed.