Effects of magnetocrystalline anisotropy constant K2 on magnetization and magnetostriction of Terfenol-D

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 [(1) over bar(1) over bar2] 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. (C) 2011 American Institute of Physics. [doi:10.1063/1.3533910]