Correlation effects in the Mössbauer spectra of amorphous metallic magnetic materials

摘要: Abstract Equations for the mean positions and root square (RMS) linewidths of six-line Mossbauer Zeeman spectrum 57 Fe in an amorphous environment have been set out used to interpret measured room temperature metallic ferromagnet 76 B 24 . The exhibits a linewidth asymmetry which is caused by correlations between various fluctuation variables involved. major source this correlation hyperfine field, electric field gradient, their relative orientation, dominant physical origin being angular dependence fluctuations. A smaller, but still significant, additional contribution arises from isomer shift. It established beyond question that neither case can these be represented simple linear coupling variables. analysis also provides separate measures RMS widths shift, gradient distributions.