Local magnetic moments of Fe and Cr atoms in quasi-binary ternary alloys $Fe_{75}(Cr_x Co_{1-x})_{25}$

The mean magnetic moments $\bar{\mu}$ and M$\stackrel{..}{o}$ssbauer spectra of binary and ternary alloys $Fe_{75}(Cr_x Co_{1-x})_{25}$ are measured at room temperature. The additivity of the contributions of Cr and Co atoms in the first two coordination spheres to the effective hyperfine-interaction field at the nuclei of Fe atoms is shown. The contributions of the magnetic moments of individual atoms $\mu_{Fe}$, $\mu_{Cr}$ and $\mu_{Co}$ to the mean magnetic moment at an atom of the alloy are estimated. It is shown that the magnetic moment of Cr atoms is antiparallel to the magnetization vector of the sample.