JP2020087497A5 - - Google Patents

Description

The magnetic recording medium according to the first aspect of the present invention includes a support layer having flexibility and a plurality of magnetic particles including a hard magnetic material, and is supported by the support layer so that the adjacent magnetic particles are in contact with each other. a hard magnetic layer, the particle layer, characterized in that the Ru and a soft magnetic layer containing a soft magnetic material in contact with the particle layer on the side opposite to the side supported by the supporting layer.

Further, the method for manufacturing a magnetic recording medium according to the second aspect of the present invention includes a step of preparing a support layer having flexibility and a method of contacting a plurality of magnetic particles including a hard magnetic material so that the magnetic particles are in contact with each other. forming one magnetic particle layer is deposited on the surface of the support layer, and forming a soft magnetic layer containing soft magnetic material on the surface opposite to the side supported by the supporting layer of the magnetic particle layer characterized by that Yusuke before SL and magnetic field applying step of magnetizing the soft magnetic body and the magnetic particles in a predetermined direction.

Claims (17)

A support layer having flexibility, a hard magnetic layer that contains a plurality of magnetic particles including a hard magnetic material and is supported by the support layer so that the adjacent magnetic particles are in contact with each other, and the particle layer is the support layer. magnetic recording medium Ru comprising a soft magnetic layer, a containing soft-magnetic material in contact with the particle layer on the side opposite to the side supported by. The hard magnetic material, a magnetic recording medium according to請Motomeko 1 you containing ε iron oxide. The magnetic particles, the magnetic recording medium according to請Motomeko 2 you containing ε iron oxide as a main component. Wherein ε iron oxide, magnetic recording medium according to trivalent iron including請Motomeko 2 or 3. Wherein ε iron oxide, magnetic recording medium according to substituted metal to first term either including請Motomeko 2-4. The substituted metal, Co, Ni, Ti, magnetic recording medium according to at least one Tsuo含No請Motomeko 5 of Ga. It said epsilon iron _{oxide, ε-P x Q y R} z Fe (2-3x-1.5y-z) magnetic recording medium according to any one of _{O 3} Ru described in請Motomeko 2 to 6.
However, P, Q, and R are monovalent , divalent , and trivalent metals, respectively, and 0 ≦ x <1.5, 0 ≦ y <2/3, 0 ≦ z <2, 0 ≦ 3x-1. It is a number satisfying 5y-z <2. The soft magnetic material, a magnetic recording medium according to any one of請Motomeko 1-7 you containing alpha-Fe. The soft magnetic material, a magnetic recording medium according to請Motomeko 8 you containing alpha-Fe as a main component. The magnetic particles, the magnetic recording medium according to any one of the soft magnetic material請Motomeko 1-9 that are bound to one another through. The magnetic particles, the magnetic recording medium according to any one of the請Motomeko 1 to 10 soft-magnetic material and that has been interposed between the support layer. The soft magnetic material, the side opposite to the surface on which the magnetic particles facing the supporting layer, said plurality of magnetic recording medium according to any one of請Motomeko 1 to 11 of magnetic particles that have been coated .. The way the laminate of the support layer and the hard magnetic layer has a variable橈性, the support layer is a magnetic recording according to any one of請Motomeko 1 to 12 that have supported the hard magnetic layer Medium. The support layer, a magnetic recording medium according to any one of the resin layer der Ru請Motomeko 1 to 13 which does not exhibit magnetism. The magnetic particles are non-spherical, including a major axis and a minor axis, in the plurality of magnetic particles, the long axis of any one of請Motomeko 1 to 14 that is oriented in a predetermined direction Magnetic recording medium. The predetermined direction is a magnetic recording medium according to the direction der Ru請Motomeko 15 along the easy axis. A step of preparing a support layer having flexibility and a step of depositing a plurality of magnetic particles including a hard magnetic material on one surface of the support layer so that the magnetic particles are in contact with each other to form a magnetic particle layer. ,
Forming a soft magnetic layer containing soft magnetic material on the surface opposite to the side supported by the supporting layer of the magnetic particle layer, a magnetic field to magnetize the previous SL soft-magnetic material and the magnetic particles in a predetermined direction is applied method of manufacturing a magnetic recording medium that Yusuke and step.