Effects of magnetocrystalline anisotropy constant K_2 on magnetization and magnetostriction of Terfenol-D

摘要

Magnetocrystalline anisotropy constant K_2 is found to produce significant effects on the magnetization and magnetostriction behaviors of Terfenol-D crystals through magnetic domain rotation mechanism. Such effects have often been neglected in previous studies. Considering different values of K_2 in the magnetization rotation of (111) easy-direction domains under external magnetic field and compressive uniaxial stress applied along [FF2] direction, it is shown that a change in K_2 causes significant changes in both magnetization and magnetostriction curves. Therefore, K_2 is an important parameter that must be considered in magnetoelastic behaviors of Terfenol-D.