X-ray diffraction, magnetization, and M??ssbauer effect investigations have been performed for
sputtered Fe1-xCrx (0??v??0.54) thin films. The body-centered-cubic (bcc) phase appears for x <0.32, while
the ? phase is formed for 0.38??x??0.44. For 0.32??x<0.38 and 0.44<x??0.54, the samples are composed of
both bcc and ? phases. As the Cr concentration increases, the ferromagnetic fraction, magnetization, and
magnitude of the hyperfine field decrease, whereas the magnitude of the isomer shift increases. The Fe and
Cr magnetic moments, isomer shift, and hyperfine field of the bcc Fe-Cr phase have been deduced and are
discussed consistently in terms of charge and spin distributions, as well as magnetic valence. ?? 2000
American Institute of Physics.
