Patent ID: 9087532
Filing Date: 2015-07-21
Classification: G11B

Abstract:
1. A magnetic head comprising: a main magnetic pole configured to apply a recording magnetic field to a recording magnetic medium; an auxiliary magnetic pole configured to form a magnetic circuit together with the main magnetic pole; and a spin torque oscillator formed between the main magnetic pole and the auxiliary magnetic pole, the spin torque oscillator including a first interface magnetic layer formed on one of the main magnetic pole and the auxiliary magnetic pole, and containing at least one element selected from the group consisting of iron, cobalt, and nickel, and at least one element selected from the group consisting of chromium, vanadium, manganese, titanium, and scandium, a first interlayer formed on the first interface magnetic layer, an oscillation layer formed on the first interlayer, a second interlayer formed on the oscillation layer, and a second interface magnetic layer formed on the second interlayer.