Magnetic properties of DyCo5 and TbCo5 intermetallics from the electronic structure calculations

LSDA and image calculations, with spin–orbit coupling (SOC) included, were performed for DyCo5 and TbCo5 intermetallic compounds. In the case of magnetic moments, image calculations give results in good agreement with the experimental data. However, LSDA has shown to be unable to predict relative stabilities of ferromagnetic and ferrimagnetic configurations of the image and image spin sublattices giving the wrong result that the ferromagnetic configuration is more stable. image method cures this problem and gives correct result. Additionally, within the accuracy of available experimental data, the corresponding effective exchange fields are in reasonable agreement with experiment.