Submicron-trackwidth inductive/MR composite head
To explore the possibility for ultra-high areal density recording, submicron-trackwidth inductive-write/magnetoresistive-(MR)-read composite heads were fabricated. The focused ion beam etching technique was applied to fabricate a approximately 1- mu m-wide write-track completely aligned to the read-...
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| Veröffentlicht in: | IEEE transactions on magnetics 1991-11, Vol.27 (6), p.4678-4683 |
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| container_end_page | 4683 |
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| container_issue | 6 |
| container_start_page | 4678 |
| container_title | IEEE transactions on magnetics |
| container_volume | 27 |
| creator | Takano, H. Fukuoka, H. Suzuki, M. Shiiki, K. Kitada, M. |
| description | To explore the possibility for ultra-high areal density recording, submicron-trackwidth inductive-write/magnetoresistive-(MR)-read composite heads were fabricated. The focused ion beam etching technique was applied to fabricate a approximately 1- mu m-wide write-track completely aligned to the read-region of the MR sensor. The write head using multilayered Fe-based alloy pole pieces with a saturation magnetization of 2.0 T revealed sufficient writability and excellent frequency response. A shunt-biased MR sensor having a narrow gap-length operated at a high current density over 3*10/sup 7/ A/cm/sup 2/ is developed to reproduce a sufficient signal amplitude at high linear-density regions. Recording tests were carried out on a thin-film medium with a head-medium clearance of 0.05 mu m. The output voltage per micron of trackwidth over 400 mu V with symmetrical pulses, and a -6-dB rolloff density of around 90 kFCI were measured. The design procedure, fabrication method, and recording performances of the submicron-trackwidth inductive/MR composite heads which can attain 2 gigabits recording are discussed.< > |
| doi_str_mv | 10.1109/20.278914 |
| format | Article |
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The focused ion beam etching technique was applied to fabricate a approximately 1- mu m-wide write-track completely aligned to the read-region of the MR sensor. The write head using multilayered Fe-based alloy pole pieces with a saturation magnetization of 2.0 T revealed sufficient writability and excellent frequency response. A shunt-biased MR sensor having a narrow gap-length operated at a high current density over 3*10/sup 7/ A/cm/sup 2/ is developed to reproduce a sufficient signal amplitude at high linear-density regions. Recording tests were carried out on a thin-film medium with a head-medium clearance of 0.05 mu m. The output voltage per micron of trackwidth over 400 mu V with symmetrical pulses, and a -6-dB rolloff density of around 90 kFCI were measured. The design procedure, fabrication method, and recording performances of the submicron-trackwidth inductive/MR composite heads which can attain 2 gigabits recording are discussed.< ></description><identifier>ISSN: 0018-9464</identifier><identifier>EISSN: 1941-0069</identifier><identifier>DOI: 10.1109/20.278914</identifier><identifier>CODEN: IEMGAQ</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Applied sciences ; Current density ; Disk recording ; Electronics ; Etching ; Exact sciences and technology ; Frequency response ; Ion beams ; Magnetic heads ; Magnetic sensors ; Magnetoresistance ; Miscellaneous ; Pulse measurements ; Saturation magnetization ; Storage and reproduction of information</subject><ispartof>IEEE transactions on magnetics, 1991-11, Vol.27 (6), p.4678-4683</ispartof><rights>1993 INIST-CNRS</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c403t-f10f693d1e3f77990b7f8d363e4b5d3d4a713d55b5c4c81ecfddb02d0a4019263</citedby><cites>FETCH-LOGICAL-c403t-f10f693d1e3f77990b7f8d363e4b5d3d4a713d55b5c4c81ecfddb02d0a4019263</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/278914$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,776,780,792,27901,27902,54733</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/278914$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=4481746$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Takano, H.</creatorcontrib><creatorcontrib>Fukuoka, H.</creatorcontrib><creatorcontrib>Suzuki, M.</creatorcontrib><creatorcontrib>Shiiki, K.</creatorcontrib><creatorcontrib>Kitada, M.</creatorcontrib><title>Submicron-trackwidth inductive/MR composite head</title><title>IEEE transactions on magnetics</title><addtitle>TMAG</addtitle><description>To explore the possibility for ultra-high areal density recording, submicron-trackwidth inductive-write/magnetoresistive-(MR)-read composite heads were fabricated. The focused ion beam etching technique was applied to fabricate a approximately 1- mu m-wide write-track completely aligned to the read-region of the MR sensor. The write head using multilayered Fe-based alloy pole pieces with a saturation magnetization of 2.0 T revealed sufficient writability and excellent frequency response. A shunt-biased MR sensor having a narrow gap-length operated at a high current density over 3*10/sup 7/ A/cm/sup 2/ is developed to reproduce a sufficient signal amplitude at high linear-density regions. Recording tests were carried out on a thin-film medium with a head-medium clearance of 0.05 mu m. The output voltage per micron of trackwidth over 400 mu V with symmetrical pulses, and a -6-dB rolloff density of around 90 kFCI were measured. The design procedure, fabrication method, and recording performances of the submicron-trackwidth inductive/MR composite heads which can attain 2 gigabits recording are discussed.< ></description><subject>Applied sciences</subject><subject>Current density</subject><subject>Disk recording</subject><subject>Electronics</subject><subject>Etching</subject><subject>Exact sciences and technology</subject><subject>Frequency response</subject><subject>Ion beams</subject><subject>Magnetic heads</subject><subject>Magnetic sensors</subject><subject>Magnetoresistance</subject><subject>Miscellaneous</subject><subject>Pulse measurements</subject><subject>Saturation magnetization</subject><subject>Storage and reproduction of information</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><recordid>eNqNkEtLAzEUhYMoWKsLt666EMHFtPdOMplkKcUXVAQf6yGTB43OoyYziv_eKVO6dnW53O8c7jmEnCPMEUEuUpinuZDIDsgEJcMEgMtDMgFAkUjG2TE5ifFjWFmGMCHw2pe116Ftki4o_fnjTbee-cb0uvPfdvH0MtNtvWmj7-xsbZU5JUdOVdGe7eaUvN_dvi0fktXz_ePyZpVoBrRLHILjkhq01OW5lFDmThjKqWVlZqhhKkdqsqzMNNMCrXbGlJAaUAxQppxOydXouwntV29jV9Q-altVqrFtH4tU5CLjAP8AOQ5RxQBej-CQNsZgXbEJvlbht0AotuUVKRRjeQN7uTNVUavKBdVoH_cCxgTmbPvkxYh5a-3-uvP4AzFOdRw</recordid><startdate>19911101</startdate><enddate>19911101</enddate><creator>Takano, H.</creator><creator>Fukuoka, H.</creator><creator>Suzuki, M.</creator><creator>Shiiki, K.</creator><creator>Kitada, M.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope><scope>8BQ</scope><scope>JG9</scope></search><sort><creationdate>19911101</creationdate><title>Submicron-trackwidth inductive/MR composite head</title><author>Takano, H. ; Fukuoka, H. ; Suzuki, M. ; Shiiki, K. ; Kitada, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c403t-f10f693d1e3f77990b7f8d363e4b5d3d4a713d55b5c4c81ecfddb02d0a4019263</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>Applied sciences</topic><topic>Current density</topic><topic>Disk recording</topic><topic>Electronics</topic><topic>Etching</topic><topic>Exact sciences and technology</topic><topic>Frequency response</topic><topic>Ion beams</topic><topic>Magnetic heads</topic><topic>Magnetic sensors</topic><topic>Magnetoresistance</topic><topic>Miscellaneous</topic><topic>Pulse measurements</topic><topic>Saturation magnetization</topic><topic>Storage and reproduction of information</topic><toplevel>online_resources</toplevel><creatorcontrib>Takano, H.</creatorcontrib><creatorcontrib>Fukuoka, H.</creatorcontrib><creatorcontrib>Suzuki, M.</creatorcontrib><creatorcontrib>Shiiki, K.</creatorcontrib><creatorcontrib>Kitada, M.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>METADEX</collection><collection>Materials Research Database</collection><jtitle>IEEE transactions on magnetics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Takano, H.</au><au>Fukuoka, H.</au><au>Suzuki, M.</au><au>Shiiki, K.</au><au>Kitada, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Submicron-trackwidth inductive/MR composite head</atitle><jtitle>IEEE transactions on magnetics</jtitle><stitle>TMAG</stitle><date>1991-11-01</date><risdate>1991</risdate><volume>27</volume><issue>6</issue><spage>4678</spage><epage>4683</epage><pages>4678-4683</pages><issn>0018-9464</issn><eissn>1941-0069</eissn><coden>IEMGAQ</coden><abstract>To explore the possibility for ultra-high areal density recording, submicron-trackwidth inductive-write/magnetoresistive-(MR)-read composite heads were fabricated. The focused ion beam etching technique was applied to fabricate a approximately 1- mu m-wide write-track completely aligned to the read-region of the MR sensor. The write head using multilayered Fe-based alloy pole pieces with a saturation magnetization of 2.0 T revealed sufficient writability and excellent frequency response. A shunt-biased MR sensor having a narrow gap-length operated at a high current density over 3*10/sup 7/ A/cm/sup 2/ is developed to reproduce a sufficient signal amplitude at high linear-density regions. Recording tests were carried out on a thin-film medium with a head-medium clearance of 0.05 mu m. The output voltage per micron of trackwidth over 400 mu V with symmetrical pulses, and a -6-dB rolloff density of around 90 kFCI were measured. The design procedure, fabrication method, and recording performances of the submicron-trackwidth inductive/MR composite heads which can attain 2 gigabits recording are discussed.< ></abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/20.278914</doi><tpages>6</tpages></addata></record> |
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| identifier | ISSN: 0018-9464 |
| ispartof | IEEE transactions on magnetics, 1991-11, Vol.27 (6), p.4678-4683 |
| issn | 0018-9464 1941-0069 |
| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Applied sciences Current density Disk recording Electronics Etching Exact sciences and technology Frequency response Ion beams Magnetic heads Magnetic sensors Magnetoresistance Miscellaneous Pulse measurements Saturation magnetization Storage and reproduction of information |
| title | Submicron-trackwidth inductive/MR composite head |
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