STRESS CONTROL APPARATUS, MAGNETIC CHARACTERISTICS MEASURING APPARATUS, STRESS CONTROL METHOD AND MAGNETIC CHARACTERISTICS MEASURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a magnetic characteristics measuring apparatus and a magnetic characteristics measuring method which have a simple structure and are capable of highly accurately measuring magnetic characteristics, and a stress control apparatus and a stress control method suitable therefor.;SOLUTION: On one surface of a tabular sample 10, stress application means including a piezoelectric film 14 and a piezoelectric film 16 which apply isotropic stress in an in-plane direction to the sample 10 is provided, first voltage is applied to the piezoelectric film 14, second voltage is applied to the piezoelectric film 16, whether or not displacement of the sample 10 in a thickness direction is within a predetermined range is determined, and the first voltage and the second voltage are adjusted until the displacement of the sample 10 in the thickness direction falls into a predetermined range based on the determination result. The displacement of the sample 10 in the thickness direction is brought into a predetermined range, magnetic field is applied to the sample 10, magnetic field is measured by magnetic field sensors 70a, 70b provided on the other surface of the sample 10, and magnetic characteristics of the sample 10 are detected in the state where stress is applied to the sample 10 by the stress application means. The sample 10 is a sample of a magnetic material.;SELECTED DRAWING: Figure 8;COPYRIGHT: (C)2018,JPO&INPIT