CRITICAL-BEHAVIOR OF CUBIC MAGNETOSTRICTIVE MATERIALS UNDER STRESS

Critical points and lines in magnetic field space define the boundarie s of different magnetization states between which the magnetization ma y ''jump,'' leading to hysteresis. We calculate the changes in these b oundaries due to magnetoelastic coupling to applied stresses, and obta in the critical stresses required to eliminate jumping in specific cas es. These results may provide a way of reducing or eliminating hystere sis in large magnetostriction materials. (C) 1997 American Institute o f Physics.