Magnetization and Electrical Resistivity in Itinerant Electron Ferromagnet Ni₃Al

Abstract

The temperature dependence of the magnetization, electrical resistivity and magnetoresistance of the stoichiometric Ni₃Al have been measured. The spontaneous magnetization under the zero magnetic field and temperature T, M(0, T) has a temperature dependence in a form of M(0, T)²∝T^4⁄3 in a wide temperature range. The electrical resistivity shows a T^5⁄3-dependence in a temperature range below and above T_c. These experimental results are consistent with the predictions of the self-consistent renormalization (SCR) theory of spin fluctuations. The experimental results of the magnetoresistance are also discussed with the SCR theory.