A method for evaluating the temperature dependence of the s-d exchange interaction of 3d ferromagnets

Based on a correlation analysis of experimental data on the resistivity and thermal expansion, simple empirical expressions are obtained that describe the temperature dependences of the s-d exchange interaction energy and the spontaneous magnetization of 3d ferromagnets. These relationships can be used for evaluating the temperature dependences of the corresponding characteristics of nanodimensional particles and films of ferromagnetic materials from experimental data on their thermal deformation.