Abstract
We report the results of measurements on metallic glasses of the form Y66(Fe1−x M x )34. For M = B we find that there is an extended range of glass formation (0≦x≦0.40) and that properties such as atomic density, electrical resistivity, microhardness, and thermal stability are functions ofx. For M = C, Si, or Ge we find a restricted range of glass formation (0 ≦x≦0.10) and no significant changes in the properties of the glasses. Using Fe57 Mössbauer effect spectroscopy we find that the M = B case is again unique in that the structure of the glass is sensitive to B content. We relate the differences in glass formation for the M = B and M = C, Si, Ge glasses to the existence of Y rich compounds in the C, Si, and Ge cases and the lack of such compounds in the M = B case.
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