Perovskite Structure を持つマンガン化合物の強磁性について

抄録

G. H. Jonker and J. H. Van Santen suggested the possibility of explaining their experimental results for some of the ferromagnetic compounds of manganese by assuming three superexchange interactions, i. e., a strong positive Mn³⁺-Mn⁴⁺ interaction, a very small Mn³⁺-Mn³⁺ interaction and a negative Mn⁴⁺-Mn⁴⁺ interaction. Following their idea, we have calculated the dependence of the magnetization and of Curie temperature on the composition and the anomalous behavior of saturation magnetization with temperature.
We have obtained satisfactory results.