Magnetic head slider with resistive heating film meandering...

Details Magnetic head slider with resistive heating film meandering... Magnetic head slider with resistive heating film meandering...

2011-03-22

2011-03-22

Renner, Craig A. (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

C360S234400, C360S294700, C360S317000, C360S128000

Reexamination Certificate

active

07911738

ABSTRACT:
According to embodiments of the present invention, a magnetic head slider provided with a heater disposed near a read element to adjust flying height, is required to increase a thermal protrusion by heat generated by the heater without increasing a thermal protrusion attributable to heat generated by a recording current or environmental temperature. A magnetic head slider includes a thin-film head unit including a read element, a heater having a thin heating line extended above and below the read element, a write element, and an insulating layer of alumina (Al2O3) or the like insulating those components. The thin heating line of the heater is formed from a thin resistive film of NiCr or the like. The thin heating line of the heater is extended above and below the read element so as to meander in a zigzag shape in a direction perpendicular to the device forming surface. The thin heating line has a thickness between about 0.1 and 0.2 μm, a width between about 1 and 3 μm, a length of about 100 μm, and a resistance between about 50 and 500 Ω.

REFERENCES:
patent: 5991113 (1999-11-01), Meyer et al.
patent: 7095587 (2006-08-01), Kurita et al.
patent: 2003/0099054 (2003-05-01), Kamijima
patent: 2003/0174430 (2003-09-01), Takahashi et al.
patent: 2005/0094316 (2005-05-01), Shiramatsu et al.
patent: 2007/0188919 (2007-08-01), Kobayashi
patent: 2005-056447 (2005-03-01), None
patent: 2005-135501 (2005-05-01), None

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