Method for initializing magnetic recording medium, method for transferring signal to magnetic recording medium, apparatus for processing signal of magnetic recording medium and double-sided perpendicular magnetic recording medium

摘要

An initialization magnetic field Hi as an external magnetic field is applied in a direction crossing (perpendicularly) the surface of the substrate 10 to initialize the medium 1, so that the first magnetic film 11 and the second magnetic film 12 can be initialized simultaneously. In this method for initializing a medium, the magnetization direction of the initialization magnetization H1i at the first magnetic film 11 and the magnetization direction of the initialization magnetization H2i at the second magnetic film 12 accord with each other with regard to a direction crossing the substrate 10.