MAGNETIC HEAD WITH PLURAL READ ELEMENTS HAVING PINNED LAYERS MAGNETIC DISK DEVICE COMPRISING THE SAME AND READING METHOD USING MAGNETIC HEAD
First Claim
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1. A magnetic head comprising:
- a plurality of read elements each comprising a first magnetic layer having a pinned magnetization direction, a second magnetic layer opposing the first magnetic layer via an insulating layer therebetween and having a free magnetization direction, and an independent electrode in contact with the first and second magnetic layers to output a reading signal from each read element;
wherein at least two of the plurality of read elements are arranged such that both of the first magnetic layer and the second magnetic layer of each of the at least two read elements cross an arbitrary line and the first magnetic layers of the at least two read elements are different in magnetization direction with respect each other.
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Abstract
According to one embodiment, a magnetic head includes read elements each including a first magnetic layer having a pinned magnetization direction, and a second magnetic layer provided to oppose the first magnetic layer via an insulating layer therebetween and having a free magnetization direction. At least two of the read elements are arranged such that both of the first magnetic layer and the second magnetic layer of each of these elements cross an arbitrary line and the first magnetic layers of these elements are different in magnetization direction with respect each other.
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Citations
16 Claims
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1. A magnetic head comprising:
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a plurality of read elements each comprising a first magnetic layer having a pinned magnetization direction, a second magnetic layer opposing the first magnetic layer via an insulating layer therebetween and having a free magnetization direction, and an independent electrode in contact with the first and second magnetic layers to output a reading signal from each read element; wherein at least two of the plurality of read elements are arranged such that both of the first magnetic layer and the second magnetic layer of each of the at least two read elements cross an arbitrary line and the first magnetic layers of the at least two read elements are different in magnetization direction with respect each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16)
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14. A reading method of reading recording data recorded on a recording medium, using a magnetic head comprising a plurality of read elements each comprising a first magnetic layer having a pinned magnetization direction, a second magnetic layer provided to oppose the first magnetic layer via an insulating layer there between and having a free magnetization direction, and an independent electrode in contact with the first and second magnetic layers to output a reading signal from each read element, wherein at least two of the plurality of read elements are arranged such that both of the first magnetic layer and the second magnetic layer of each of the at least two read elements cross an arbitrary line and the first magnetic layers of the at least two read elements are different in magnetization direction with respect each other, the method comprising:
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selecting, according to a skew angle of the magnetic head with respect to a data track of the recording medium, two read elements located on a central axis of the data track from the plurality of read elements; reading recording data on the data track by the selected two read elements; and averaging and synthesizing reading signals of two series read by the two read elements based on respective weighting coefficients. - View Dependent Claims (15)
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Specification