Patent
Transducers for perpendicular recording with inductive cancellation at MR sensor
David J. Seagle,Yugang Wang +1 more
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TLDR
In this article, the magnetic influence of the transducers on the sense transducers is reduced or eliminated, and the inductance of the coils used to drive the recording transducer is reduced, facilitating high-frequency operation.Abstract:
Perpendicular recording and magnetoresistive sensing transducers are disclosed having additional coil windings carrying current in an opposite direction to windings encircled by a core. The magnetic influence of the recording transducer on the sense transducer is reduced or eliminated. The inductance of the coils used to drive the recording transducer is reduced, facilitating high-frequency operation. Moreover, the magnetic flux induced by the coils and transmitted by the recording pole tip is increased, improving recording capabilities.read more
Citations
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Patent
Tunnel magnetoresistance read head with narrow shield-to-shield spacing
TL;DR: In this article, a tunnel magnetoresistance (TMR) read sensor with a tabbed AFM layer and an extended pinned layer is presented, and methods for making the same are provided.
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Methods for manufacturing a magnetoresistive structure utilizing heating and cooling
TL;DR: In this article, the authors describe a novel tunnel magnetoresistive (TMR) deposition process that can enhance the signal-to-noise ratio (SNR) of a TMR reader.
Patent
Method and system for providing a perpendicular magnetic recording head
TL;DR: In this paper, a method and system for providing a magnetic recording transducer having a pole is described. But the method is based on the assumption that the pole has side(s), a bottom, and a top wider than the bottom.
Patent
Method for providing a side shield for a magnetic recording transducer using an air bridge
TL;DR: In this article, a method for fabricating a side shield for a magnetic transducer having a non-magnetic layer and an ABS location corresponding to an ABS is described, and a pole is formed.
Patent
Magnetic etch-stop layer for magnetoresistive read heads
TL;DR: In this article, a tunneling magnetoresistive read head was constructed over a shield layer, where the magnetic etch-stop layer comprises a nonmagnetic metal and a soft magnetic material with overall property still being magnetically soft.
References
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Patent
Perpendicular magnetic recording heads with write pole shaped to reduce skew effects during writing
TL;DR: In this article, a writer for perpendicular recording on bilayer media with suppressed skew angle effect on the recorded track is disclosed, and the writer has a wide and flat trailing edge and a narrow leading edge.
Patent
Method of making recording heads with side shields
TL;DR: In this paper, a magnetic head capable of detecting flux from a target source among a group of sources, includes at least one magnetic pole and a magnetic shield, the shield providing to the pole 360° of magnetic shielding against sensing by the pole of flux other than the target source.
Patent
Magnetic disk drive recording a signal with a skew angle
TL;DR: A magnetic disk drive has a magnetic head for recording or reproducing information on or from a magnetic recording medium, such as a disk as discussed by the authors, which is a type of disk drive that records a signal with a skew angle on at least some tracks.
Patent
Thin-film magnetic head with a double gap for a recording medium to be magnetized vertically
TL;DR: In this article, a thin-film magnetic head with a layer-wise build-up on a nonmagnetic substrate for a recording medium which can be magnetized vertically comprises a magnetic conduction body carrying the magnetic flux, with two outer magnet legs and a further central magnet leg, the poles of which facing the recording medium are arranged one behind the other as seen in the direction of motion of the head, and with predetermined gap widths between each other.
Patent
Thin film heads having solenoid coils
Uri Cohen,Dennis R. Hollars +1 more
TL;DR: A low-noise toroidal thin film head (TFH) was proposed in this article, where a non-via large back-closure contact area is provided between the bottom and top magnetic poles along their entire back-side width, and all other open branches and loose ends in the magnetic circuit are eliminated.