Bethe Slater Curve

The Bethe-Slater curve is a graph of the integral of the exchange interaction for transition metals . The exchange integral between neighboring atoms in crystals is plotted as a function of the ratio of their distance to the diameter of the unfilled shell . ${\ displaystyle J}$ ${\ displaystyle a}$ ${\ displaystyle r}$

In the discussion of the magnetic behavior of transition metals, the Bethe-Slater curve has proven its worth, even if the deeper theoretical conditions are so far only insufficiently understood. All metals with a positive are ferromagnetic (for example iron , cobalt , nickel , gadolinium ), those with a negative are antiferromagnetic or paramagnetic . ${\ displaystyle J}$ ${\ displaystyle J}$

The curve was developed by Hans Bethe and John C. Slater .

literature

John C. Slater: Cohesion in Monovalent Metals . Phys. Rev. 35 (1930) 509-529