Magnetic recording medium having a dimensional variation
摘要
說(shuō)明書(shū)
For the magnetic recording medium 110 according to the second embodiment, as in the first embodiment, the width of the magnetic recording medium 10 can be kept constant or substantially constant by adjusting the tension in the longitudinal direction of the magnetic recording medium 10.
The magnetic recording medium 110 may further include a base layer between the substrate 111 and the SUL 112. The SUL 112 which has an amorphous state, and thus has no role in promoting epitaxial growth of a layer formed on the SUL 112, is required not to disturb the crystal orientation of the first and second base layers 114A and 114B formed on the SUL 112. To that end, the soft magnetic material preferably has a fine structure that forms no column, but in the case of being largely affected by degassing of moisture or the like from the substrate 111, there is a possibility that the soft magnetic material may be coarsened, thereby disturbing the crystal orientation of the first and second base layers 114A and 114B formed on the SUL 112. In order to suppress the influence of degassing of moisture or the like from the substrate 111, it is preferable to provide, between the substrate 111 and the SUL 112, a base layer that includes an alloy containing Ti and Cr and has an amorphous state, as described above. As a specific configuration of the base layer, a configuration can be adopted which is similar to that of the first seed layer 113A according to the second embodiment.
