Magneto-resistive head utilizing plural plates arranged with their easy axis parallel to recorded magnetic flux
AssigneeSamsung Electronics Co., Ltd.
InventorHae-jung Lee
Life of this patent
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Abstract
A magneto-resistive (MR) head of a new structure provides a linear output according to the variation of a recording magnetic flux. The magneto-resistive head generates an electrical output corresponding to the variation of a recording magnetic flux recorded on a disk, and includes an MR element portion disposed in such a manner that the forward (easy) direction of the MR element portion parallels the direction of the recording magnetic flux, and conductors coupled to the MR element portion through which a measured current flows. The MR head has linear output characteristics with respect to the variation of the recording magnetic flux. Also, the MR head does not need a bias means as does the conventional MR head.
Claims10
A magneto-resistive head which generates an electrical output corresponding to the variation of a recording magnetic flux recorded on a disk, the magneto-resistive head comprising:
- a magneto-resistive element portion disposed in such a manner that a forward (easy) direction of said magneto-resistive element portion parallels a direction of the recording magnetic flux said magneto-resistive element portion including of a plurality of plates spaced apart from each other in a single plane;
- and
- a conductor portion coupled to each of said plates of the magneto-resistive element portion, through which a measured current flows.
A magneto-resistive head which generates an electrical output corresponding to the variation of a recording magnetic flux recorded on a disk, the magneto-resistive head comprising:
- a first conductor disposed to extend adjacent to and across a width of a track;
- a second conductor connected to said first conductor and spaced parallel to vertically apart from said first conductor, wherein a measured current flows through said first and second conductors;
- and
- a magneto-resistive element portion coupled to said first and second conductors, said magneto-resistive element portion including a plurality a parallel uniformly spaced plates, each of said plates having a first end portion orthogonally and directly connected to said first conductor and a second end portion orthogonally and directly connected to said second conductor, wherein an easy direction of said plurality of parallel uniformly spaced plates parallels a direction of said recording magnetic flux.
A magneto-resistive head which generates an electrical output corresponding to the variation of a recording magnetic flux recorded on a disk, the magneto-resistive head comprising:
- a first conductor disposed to extend adjacent to and across a width of a track;
- a second conductor connected to said first conductor and spaced vertically apart from and parallel to said first conductor, wherein a measured current flows through said first and second conductors;
- and
- a plurality a parallel uniformly spaced plates, each of said plates having a first end portion orthogonally connected to said first conductor and a second end portion orthogonally connected to said second conductor, wherein an easy direction of said plurality of parallel uniformly spaced plates parallels a direction of said recording magnetic flux.
A method of providing a linear output with respect to variations of a recording magnetic flux, said method comprising:
- passing a measured current through a conductor adjacent a track comprising said recording magnetic flux;
- and
- generating an easy direction magnetic flux parallel to a direction of said recording magnetic flux by a plurality of uniformly spaced parallel plates electrically connected to said conductor, said plates having uniformly distributed magnetic flux between adjacent plates.
Dependencies are inferred from the claim text.