MAGNETIC FIELD DISTRIBUTION MEASURING DEVICE, TEMPERATURE DISTRIBUTION MEASURING DEVICE, MAGNETIC FIELD DISTRIBUTION MEASURING METHOD, AND TEMPERATURE DISTRIBUTION MEASURING METHOD

摘要

PPROBLEM TO BE SOLVED: To provide a magnetic field distribution measuring device and a magnetic field distribution measuring method for measuring magnetic field distribution of a magnetic domain recorded in a magnetic recording medium, and to provide a temperature distribution measuring device and a temperature distribution measuring method for measuring temperature distribution in a laser beam spot when the magnetic domain is recorded in a magneto-optical recording medium. PSOLUTION: Gradation data are calculated from image data obtained by observing the magneto-optical recording medium M in which the magnetic domains are recorded by using a polarization microscope, magnetic field distribution is outputted based on magnetic field intensity data calculated from the gradation data, magnetic field distribution of the magnetic domains recorded in the magneto-optical recording medium M is measured, gradation data is calculated from image data obtained by observing the magneto-optical recording medium M being irradiated with a recording laser beam by using the polarization microscope, magnetic field intensity data is calculated from the gradation data, temperature distribution is outputted based on temperature data calculated from the magnetic field intensity data and temperature distribution in the laser beam spot when the magnetic domains are recorded in the magneto-optical recording medium M is measured. PCOPYRIGHT: (C)2008,JPO&INPIT