CPP-GMR technology for magnetic read heads of future high-density recording systems |
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Authors: | Keiichi Nagasaka |
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Affiliation: | Magnetic Device Laboratory, Fujitsu Laboratories Ltd., 10-1, Morinosato-Wakamiya, Atsugi, Kanagawa 243-0197, Japan |
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Abstract: | This paper introduces CPP-GMR technology, its features, routes to output enhancement, problems to be solved and possibilities as a recording head. For instance, use of high spin-dependent bulk scattering, high resistivity, or half-metallic magnetic materials for free and reference magnetic layers were shown as ways to improve the output of CPP-GMR. A current state of CPP-GMR head development was also mentioned in view points of sensor downsizing, magnetic head noise and high-density recording demonstration. CPP-GMR still has some points to be improved, however it is believed that the CPP-GMR will actualize a next high-performance magnetic read head in no distant future. |
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Keywords: | CPP-GMR Magnetic read head HDD |
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