Simulation on Domain Rotation Path and Magnetostriction of Terfenol-D Alloy

Based on a simplified domain rotation model, the rotation path of internal domains and corresponding magnetostriction of 112], 111] oriented single Terfenol-D crystals under compressive prestresses have been simulated. Comparisons with results of experiment and other calculation have been made. Results of simulation showed that the 111] oriented single crystal has better low-field magnetostriction properties than the 112] oriented one. Under a compressive prestress of 10 MPa, up to 2300x10(-6) saturation magnetostriction of 111] oriented crystal has been obtained at 800 Oe, while for 112] oriented, 1600x10(-6) maximum magnetostriction has been reached at 1000 Oe.