System and method for minimizing thermal pole tip protrusion

Details System and method for minimizing thermal pole tip protrusion System and method for minimizing thermal pole tip protrusion

2006-04-25

2006-04-25

Chen, Tianjie (Department: 2656)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

07035046

ABSTRACT:
An enhanced recording head design provides thermal diffusion and thermal expansion control in order to minimize the pole tip protrusion resulting from the thermal heating of the magnetic recording head during operation. In one embodiment, the recording head a thermal restraint section formed above a write section, and is made of a 60–80% face-centered-cubic NiFe (Invar) material. According to another embodiment, the thermal restraint section is formed under the read section. According to yet another embodiment, one thermal restraint section is formed above the write section, and another thermal restraint section formed under the read section.

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