Аннотация:This work demonstrates the use of polarization analysis of reflected radiation to reveal the contributions from magnetically ordered phases in poorly resolved Mössbauer spectra obtained with π-polarized radiation from the Synchrotron Mössbauer Source. The study was carried out for the cluster-layered structure [57Fe (0.08 nm)/Cr (1.08 nm)]30. As a result, it was shown that only 16% of iron atoms are ferromagnetically ordered, while the remaining iron atoms are in the spin glass state.