Comment on the possibility of Inverse Crystallization within van   Hemmen's Classical Spin-Glass model
  In this comment, I show that van Hemmen's classical spin-glass model can also account for processes such as inverse crystallization, where a ferromagnetic phase appears at higher temperatures than a glass state. The so far ignored fact is the temperature dependence of the Ruderman-Kittel-Kasuya-Yosida interaction. This generalization may be relevant to other models. 
Eduardo Cuervo Reyes
cond-mat.dis-nn