Young's Modulus Anisotropy and Magnetomechanical Damping of 110Oriented Tb_0.3 Dy_0.7 Fe_1.95 Alloy

The △E effect and the magnetoelastic or magnetomechanical damping of vibrations in 110 oriented Tb0.3Dy0.7Fe1.95 alloy are experimentally studied by quasi-static stress--strain measurements under various constant magnetic fields between 0 and 3000Oe, where stress ranges are taken from about 0 to -25, -50, -75MPa. The linear stress--strain behaviour is obtained when the magnetic field is high enough (9000Oe). However, the modulus E varies with the angle θ between the compressive stress and magnetic field
(9000Oe), which shows that the anisotropy of the modulus E is related to the magnetic domain distribution.