Fe-57 Mossbauer measurements performed on FeSi1-xGex reveal a reduction of
the band gap Delta E with increasing x together with a band broadening. Res
istivity studies of FeSi and on various Si-rich alloys up to 93 kbar, in tu
rn, unveil a continuous growth of Delta E. (C) 1999 Elsevier Science B.V. A
ll rights reserved.