Patent ID: 6683275
Filing Date: 2004-01-27
Classification: G11B

Abstract:
A method for fabricating a phase-change recording medium for depositing particles of phase-change recording material onto a substrate to form a coat of phase-change recording layer, the method comprising:a first step of loading a substrate into a vacuum chamber; a second step of filling said vacuum chamber with a sputtering gas; an optional third step of rotating the substrate; a fourth step of depositing sputtering particles struck out of a sputtering target onto the substrate to form a phase-change recording layer, the sputtering particles being deposited on the substrate up to a pre-determined thickness; and a fifth step in which a crystallization energy supply mechanism irradiates the sputtering particles with a laser beam having energy necessary for initial crystallization, wherein initialization of the irradiation is started during the course of the fourth step of deposition, but does not begin until the coat of the phase-change recording layer reaches the pre-determined thickness.