Mössbauer-Effect Study of the Laves Phases(Fe1−xMnx)2Ti

The Mössbauer spectra of a series of Laves phases ${\left({\mathrm{Fe}}_{1-x}{\mathrm{Mn}}_x\right)}_2\mathrm{Ti}$ have been measured at 77 and 300 °K. The results have been interpreted in terms of a two-site model, representing the two inequivalent positions for Fe atoms in the unit cell. This analysis indicates that Fe and Mn do not substitute randomly into the two sites. The variation of the isomer shift with composition is not adequately described by scaling the electronic charge density with volume.