Magnetic recording apparatus having magnetic flux control part and magnetic recording head having magnetic flux control part

A magnetic recording head, which is capable of recording data on the magnetic recording medium, the magnetic recording head comprising:

• a first magnetic pole part;
• a second magnetic pole part, a gap magnetic field being generated between the first magnetic pole part and the second magnetic pole part;
• and
• a magnetic flux control part provided between the first magnetic pole part and the second magnetic pole part,
• wherein the magnetic flux control part comprises:
• a first layer being provided as a magnetic flux control layer between the first magnetic pole part and the second magnetic pole part and including at least one element selected from the group consisting of Fe, Co, and Ni;
• a second layer provided between the first magnetic pole part and the first layer and including at least one element selected from Pt, W, Ta, Ru, and Pd;
• and
• a third layer provided between the second magnetic pole part and the first layer and including at least one element selected from the group consisting of Cu, Ag, and Au, and
• wherein an oscillation frequency of magnetization of the first layer for recording is greater than a ferromagnetic resonance frequency of the magnetic recording medium while the first layer has a component antiparallel to the gap magnetic field after a magnetization direction of the first layer is inverted.

A magnetic recording head, which is capable of recording data on the magnetic recording medium, the magnetic recording head comprising:

• a first magnetic pole part;
• a second magnetic pole part;
• and
• a magnetic flux control part provided between the first magnetic pole part and the second magnetic pole part,
• wherein the magnetic flux control part comprises:
• a first layer being provided as a magnetic flux control layer between the first magnetic pole part and the second magnetic pole part and including at least one element selected from the group consisting of Fe, Co, and Ni;
• a second layer provided between the first magnetic pole part and the first layer and including at least one element selected from the group consisting of Cu, Ag, and Au;
• and
• a third layer provided between the second magnetic pole part and the first layer and including at least one element selected from Pt, W, Ta, Ru, and Pd, and
• wherein a film thickness of the first layer is thicker than a film thickness of the second layer and the third layer.