MAGNETOOPTICAL SPECTRUM MEASURING INSTRUMENT AND MAGNETOOPTICAL SPECTRUM MEASURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a magnetooptical spectrum measuring instrument for measuring the magnetooptical spectrum of a magnetic material at low cost, at a high speed with high accuracy, and to provide a magnetooptical spectrum measuring method.;SOLUTION: The magnetooptical spectrum measuring instrument 100 is equipped with a light source 1; a spectroscope 2 spectrally diffracting the light from the light source to select a wavelength; a polarization plate 3 for linearly polarizing the light selected by the spectroscope; a magnetic field applying means 10 for generating an AC magnetic field to apply the same to a measuring sample; an analyzer 5 measuring the polarization surface of the light of the polarized light reflected from or transmitted through the measuring sample; and a lock-in amplifier 20 performing the lock-in detection of the output signal from the analyzer and the reference signal of the AC magnetic field from the magnetic field applying means. The magnetic field applying means is equipped with a permanent magnet 6, a motor 7 for rotationally driving the permanent magnet, and a controller 8 for controlling the rotation of the motor.;COPYRIGHT: (C)2011,JPO&INPIT