Composite write pole for a magnetic recording head

Abstract

A main write pole for a perpendicular recording head for use with magnetic recording media includes a main body portion of a material with a low magnetic moments, a trailing edge of a material having a high magnetic moment and a non-magnetic de-coupling layer therebetween. The strong magnetic recording field generated by the high moment magnetic material permits the use of a magnetic recording media having high anisotropy, thereby reducing super paramagnetic instabilities at high recording densities. Additionally, the high magnetic moment of the trailing edge, combined with the low magnetic moments of the remainder of the write pole, results in a highly localized magnetic recording field, thereby reducing the sensitivity of the recording process to the skew angle. Further, the de-coupling between the low and high magnetic moment portions of the write pole minimize the problem of magnetic remanence.

Dependencies are inferred from the claim text.