Tape head with write pole having multiple layers superimposed in a direction perpendicular to the contact plane

Abstract

A tape head, configured to contact a magnetic tape, at the level of a contact plane, for writing to the tape, in operation is provided. The tape head includes a transducer, the latter being a write element, configured to write to the magnetic tape, in operation. The transducer includes a layered write pole, the latter comprising a set of two or more superimposed layers of distinct materials, the layers superimposed in a direction perpendicular to the contact plane. A saturation magnetization of each of two material layers of the set is between 1.0 to 2.3 Tesla. A contrast between the saturation magnetizations of the two material layers of the set is between 32% and 130%, the contrast defined as 100×(Bs,max/Bs,min−1), where Bs,max and Bs,min respectively denote a largest one and the smallest one of the saturation magnetizations of the two material layers of the set.

Dependencies are inferred from the claim text.