Magnetic Property of Amorphous Magnetic Thin Ribbon and Its Laminated Bulk Under Tensile and Compressive Stresses

In order to design an energy-efficient motor, it is necessary to clarify the magnetic property of Fe-based amorphous alloys under stress. However, it is difficult to measure the magnetic property of amorphous alloys under stress because a single amorphous ribbon buckles easily under compressive stress. In this paper, we describe our measurement device equipped with a stress loading mechanism of thin ribbon and laminated bulk and compare the measurement results. Our results confirm that when the stress less than −10 MPa is applied, the deviation of maximum magnetic field's strength at 0.5, 1, and 1.3 T increases almost linearly by compressive stress.