On the correlation between the width of the phase transition region near the Curie point and the variance of distribution of hyperfine magnetic fields in alloys $Fe_{75}(Cr_xCo_{1-x})_{25}$

A correlation between the width of the phase transition region near the Curie points and the variance of the distribution function for hyperfine magnetic fields has been established on the basis of studies of the temperature dependence of magnetization and the distribution function of hyperfine magnetic fields on $^{57}Fe$ nuclei in rapidly quenched $Fe_{75}(Cr_xCo_{1-x})_{25}$ alloys.