Hybrid diffuser for minimizing thermal pole tip protrusion...

Details Hybrid diffuser for minimizing thermal pole tip protrusion... Hybrid diffuser for minimizing thermal pole tip protrusion...

2005-02-22

2005-02-22

Chen, Tianjie (Department: 2652)

Dynamic magnetic information storage or retrieval

Head

Core

C360S317000

Reexamination Certificate

active

06859343

ABSTRACT:
An enchance recording head design provides conduction and mechanical restraint control in order to minimize the pole tip protrusion and the head temperature resulting from the thermal heating of the magnetic recording head during operation. In one embodiment, the recording head includes a hybrid diffuser formed within an insulation layer, at a predetermined distance from the head write section. The hybrid diffuser is comprised of a thermal conduction layer with high thermal conductivity, such as gold or copper, and a mechanical restraint layer having near zero CTE, such as a 60-80% face-centered-cubic NiFe (Invar) material. The hybrid diffuser is recessed from the ABS to prevent the delamination of the hybrid diffuser due to the otherwise displacement incompatibility between the inner insulating layer and the hybrid diffuser at the ABS.

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