| 摘要 |
A multichannel magnetic head using magnetoresistive effect comprises a first magnetic shield and electrode (11), a second magnetic shield and electrode (12), the first and second magnetic shield and electrodes (11), (12) being opposed to each other, and a plurality of magnetoresistive effect type reproducing magnetic head elements arrayed between the first and second magnetic shield and electrodes (11) and (12), wherein the reproducing magnetic head elements formed of ferromagnetic tunnel type magnetoresistive effect elements are arrayed in parallel on at least the first magnetic shield and electrode (11). Electrodes on one side for applying a sense current to these ferromagnetic tunnel type magnetoresistive effect element in the direction crossing a tunnel barrier layer are constructed commonly by the first magnetic shield and led out as a common one terminal and thereby the number of terminals can be decreased. Therefore, the number of the terminals in the multichannel magnetic head using magnetoresistive effect can be decreased, the whole of the multichannel magnetic head can be miniaturized, the occurrence of a short-circuit, a poor insulation between the terminals or between the leads can be removed, the occurrence of fluctuations of element characteristics can be removed, the multichannel magnetic head using magnetoresistive effect can become highly reliable and a yield of the multichannel magnetic head using magnetoresistive effect can be improved.
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