| 摘要 |
PURPOSE:To obtain a magnetic recording medium provided with a magnetic thin film having an easily magnetizable axis along the circumferential direction and a uniform thickness by specifying the direction and the tilt angle of the major axes of needlelike crystal grains forming a polycrystalline thin film magnetic body contg. Co, Fe, Ni or an alloy thereof as the principal component. CONSTITUTION:A rotating jig 2 can arbitrarily change the angle theta between a line connecting a vapor depositing source 5 contg. Co, Fe, Ni or an alloy thereof as the principal component to the center of a disklike substrate 1 and the rotating shaft 3. The substrate 1 is fixed to the jig 2, and a mask plate 4 is placed parallel to the substrate 1 so that the center line 8 of the fan-shaped slit 7 of the plate 4 is positioned on a straight line connecting the center line 6 of the substrate 1 to the source 5. Accordingly, the projection of the major axes of needlelike crystal grains on the substrate 1 become practically parallel to the circumference over the whole surface of the substrate 1, and the angle between the major axes and a perpendicular of the surface of the substrate 1 can be regulated to a desired value. |
