Patent
Antiferromagnetic-ferromagnetic exchange bias films
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TLDR
In this article, a pair of layers of a ferromagnetic and an antiferromagnetic material are deposited upon one another and exchange coupled to retain a unidirectional bias in the plane of the material.Abstract:
In thin film magnetic transducers, e.g., inductive or magnetoresistive recording heads, at least a pair of layers of a ferromagnetic material and an antiferromagnetic material are deposited upon one another and exchange coupled to retain a unidirectional bias in the plane of the ferromagnetic material. When multiple pairs of layers are used, they are separated by layers of nonmagnetic material. In some cases, successive pairs of layers of material with unidirectional bias have their directions of bias pointing in opposite directions. The domain walls in the layers of material are minimized by this technique.read more
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Patent
Magnetoresistive sensor based on the spin valve effect
Bernard Dieny,Bruce A. Gurney,S.E. Lambert,Daniele Mauri,Stuart S. P. Parkin,Virgil Simon Speriosu,Dennis R. Wilhoit +6 more
TL;DR: In this article, the spin valve effect was defined for a magnetoresistive sensor with a first and a second thin film layer of a magnetic material separated by a thin film of a non-magnetic metallic material.
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Magnetoresistance effect element
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TL;DR: An example magnetic recording head includes: a main magnetic pole; a laminated body; and a pair of electrodes as mentioned in this paper, which is operable to pass a current through the laminate body.
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Spin valve magnetoresistive sensor with self-pinned laminated layer and magnetic recording system using the sensor.
Kevin R. Coffey,Bruce A. Gurney,David Eugene Heim,Haralambos Lefakis,Daniele Mauri,Virgil Simon Speriosu,Dennis R. Wilhoit +6 more
TL;DR: In this paper, a self-pinned laminated layer (70) with at least two ferromagnetic films (72,74) antiferromagnetic coupled to one another across a thin AF coupling film was presented.
Patent
Magnetoresistive sensor with improved ferromagnetic sensing layer and magnetic recording system using the sensor
Bruce A. Gurney,Haralambos Lefakis,Omar U. Need,Stuart S. P. Parkin,Virgil Simon Speriosu,Dennis R. Wilhoit +5 more
TL;DR: In this article, a magnetic recording data storage system of high recording density is made possible by an improved magnetoresistive sensor, which has a ferromagnetic sensing layer that is a laminated layer of two magnetagnetic films antiferromagnetically coupled to one another and separated by an anti-magnetic coupling film.
References
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Magnetic recording medium
TL;DR: In this article, a magnetic recording medium which enables reproducing output on recording in short wave range is proposed. But this medium is not suitable for short-wave recording in general.
Patent
Self-biased magnetoresistive sensor
TL;DR: For high density recording (more than 2000 bits per inch) and magnetic bubble sensing, magnetoresistive heads are being used as discussed by the authors, where the heads are biased about the most linear range of the R-H plot of the magnetoregressive sensor of the head.