Magnetostriction of Tb-Dy-Fe alloy with different crystal axes orientation

Based on the principle of energy minimum, magnetostriction of Tb-Dy-Fe allo y with different crystal axes under different compressive stress has been c alculated using a three-dimensional anisotropy domain rotation model. Simul ated results show that the magnetostriction property of (111)-oriented sing le crystal is the best; saturation magnetostriction up to 2378 ppm has been obtained under compressive prestress of 24 MPa, which is very close to the experiment results. Saturation magnetostriction properties of (112)-orient ed and (110)-oriented single crystal are very close under lower compressive prestress, while the (110)-oriented ones have higher magnetostriction than (112)-oriented ones under higher compressive prestress. In lower magnetic field, (110)-oriented crystals achieve jump effect (1018 ppm at 715 Oe unde r 10 MPa) prior to (112)-oriented ones, which indicates that it has fairly better low-magnetic field properties. These results agree well with the exp erimental results in previous literatures. (C) 2001 Elsevier Science B.V. A ll rights reserved.