Thin film magnetic head including a separately deposited diamond

Details Thin film magnetic head including a separately deposited diamond Thin film magnetic head including a separately deposited diamond

1997-02-10

2000-07-18

Renner, Craig A.

Dynamic magnetic information storage or retrieval

Head

Core

360122, G11B 5147, G11B 5187

Patent

active

060915811

ABSTRACT:
A thin film magnetic head is provided in which a magnetic yoke assembly is built up, layer by layer, atop a substrate using semiconductor thin film techniques. A lower yoke assembly is first fabricated including a lower magnetic layer situated on the substrate and first and second side poles built up vertically from the ends of the lower magnetic layer. A coil structure is situated about one of the side poles and is separated therefrom by planar insulative layers in which the coil structure is disposed. An insulative pedestal surrounded by a frame is formed at the top of the lower yoke assembly and extends above the uppermost lateral plane of the yoke assembly. A diamond-like carbon (DLC) wear layer is deposited atop the pedestal. A pole well is excavated in the DLC layer so as to expose the first and second side poles therebelow. A first magnetic pole including a gap end is plated in the pole well at the top of the first side pole and extending toward the second side pole. A DLC gap region is deposited in the pole well at the gap end of the first magnetic pole. A second magnetic pole is then plated in the pole well between the second side pole and the DLC gap region. The upper surface of the head is machined to form a head surface which contacts or which nearly contacts the surface of a magnetic media.

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