Magnetic force microscopy observation of undercooled Fe81Ga19 magnetostrictive alloys

摘要

The magnetic domain structure of undercooled Fe81Ga19 alloys has been found to be very sensitive to the variation of undercooling during the solidification process. With increasing degree of undercooling, the evolution of domain patterns, magnetic contrast and the degree of the orientation was investigated which is relative to the magnetostriction. The combination of x-ray diffraction and magnetic force microscopy analyses has been shown to add new insights into the nature of the enhancement of magnetostriction in Fe81Ga19 alloys.