Effects of unidirectional exchange anisotropy in ferrites

Abstract

A number of anomalies occurring at the magnetic compensation and Curie points in ferrites are explained based on the concept of unidirectional exchange anisotropy. Among these anomalies are the 'even' magnetostriction, magnetoresistance, and magnetocaloric effects, the antiferromagnetic paraprocess, etc. Based on the analysis of these effects, the piezomagnetic effect is predicted to occur in 'weak sublattice' ferrimagnets.