High-Order Magnetostriction and Anisotropy in Rare Earth-Zinc Pseudobinaries

摘要

Results of strain versus magnetic field orientation are presented for the pseudobinary compound Tb_(0.88)Dy_(0.12)Zn. They are analyzed using a domain rotation model that yields both second and fourth-order magnetostriction coefficients as well as a combination of fourth, sixth, and eighth-order anisotropy. A brief review of earlier experimental results on this and other alloys of the Tb-Dy-Zn series is presented. The failure of the single ion model to adequately describe these results is demonstrated. Possible remedies are presented.