Magnetic Isotherms in the Band Model of Ferromagnetism

摘要: Calculations are given for the dependence on temperature and magnetic field strength H of magnetization M ferromagnetic metals treated basis itinerant electron model. The spin wave contribution to low is considered in limits strong very weak ferromagnetism. For first limit, problems related well-known divergence zero differential susceptibility briefly discussed. main part paper concerned with single particle contributions associated A simple equation isotherms obtained this limit shown be valid over a wide range including 0 °K Curie temperature. This implies that plots 2 against / at various temperatures give series parallel straight lines. Recently measured material ZrZn analysed theory, several characteristic properties from analysis.