Photoresist frame plated magnetic transducer pole layer employin

Details Photoresist frame plated magnetic transducer pole layer employin Photoresist frame plated magnetic transducer pole layer employin

1997-07-21

1998-12-01

Pianalto, Bernard

Coating processes

Magnetic base or coating

Magnetic coating

1566251, 360113, 427130, 427131, 427132, 427259, 427265, 427272, 427282, 427305, 427331, 4273831, 427404, 4274192, 4274197, 428336, 428457, 428693, 428698, B05D 512

Patent

active

058435212

ABSTRACT:
A method for forming a magnetic transducer, and a magnetic transducer formed through the method. There is first provided a substrate. There is then formed over the substrate a first magnetic pole layer. There is then formed upon the first magnetic pole layer a gap filling dielectric layer. There is then formed upon the gap filling dielectric layer a seed layer. There is then formed upon the seed layer a photoresist frame employed in a photoresist frame plating method for forming a plated second magnetic pole layer upon the seed layer, where a base of a sidewall of the photoresist frame has a taper which provides a notch within an edge of the plated second magnetic pole layer at its interface with the seed layer. There is then plated through the photoresist frame plating method the plated second magnetic pole layer upon the seed layer, where the seed layer is formed of a thickness and of a material which compensates when electromagnetically energizing the magnetic transducer for a magnetic write field gradient boundary decompression between the first magnetic pole layer and the plated second magnetic pole layer due to the notch within the plated second magnetic pole layer. The method for forming the magnetic transducer contemplates the magnetic transducer formed through the method.

REFERENCES:
Robertson et al. "High Performance Write Head Using NiFe 45/55" 1997 Digests of Intermag '97, Apr. 1-4, 1997, p. AA-02.
Guo et al. "Low Fringe-Field and Narrow-Track MR Heads", 1997 Digest of Intermag 1997, Apr. 1-4, p. AA-05.

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