论文信息 - Magnetic orientation in advanced recording media

Magnetic orientation in advanced recording media

The purpose of this work is to determine the distribution of easy axis orientation in advanced perpendicular recording media capable of supporting a high areal density of 400–500 Gbits inch−2. The distribution of easy axis orientation has been investigated via the measurement of the variation of coercivity HC with angle to the perpendicular to the film plane. At HC there is no effect from the strong demagnetizing field. Simulations based on the assumption that each grain reverses coherently are compared with the experimental results. We find that the value of coercivity is reduced approximately 10–13% with a variation of angle to the perpendicular of 10°. The standard deviation of the distribution of the easy axis directions is between 5° and 7°.

R. Chantrell | R. Evans | P. Chureemart | J. Chureemart | K. Grady

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