MAGNETIC STORAGE DEVICE

PROBLEM TO BE SOLVED: To provide a storage device which can keep a stable floating posture of a magnetic head at a high surface recording density of at least 600 giga bits/square inch and ensure long-term sliding-resistant characteristics. SOLUTION: The magnetic storage device is provided with a disk-shaped magnetic recording medium of vertical magnetic recording type to which recording is made at the surface recording density of at least 600 giga bits/square inch; a magnetic head for recording and reproduction; a rotation means for moving the magnetic head and the magnetic recording medium relatively; a driving means for positioning the position of the magnetic head in a radius direction; and a housing which accommodates them. In addition, the housing is filled with a gas having an average molecular weight of 22 or below and then sealed. By this, the stable floating posture of the magnetic head is kept, and the long-term sliding-resistant characteristics are ensured. COPYRIGHT: (C)2005,JPO&NCIPI