Understanding overwrite for high speed magnetic recording
In this article, we present an experimental study of the overwrite degradation in high speed recording. Recorded hard and easy transitions were directly characterized and correlated to medium speed, write current waveform and media properties. It has been found that, when high medium speed becomes g...
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| Veröffentlicht in: | IEEE transactions on magnetics 1999-09, Vol.35 (5), p.2532-2534 |
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| container_end_page | 2534 |
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| container_issue | 5 |
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| container_title | IEEE transactions on magnetics |
| container_volume | 35 |
| creator | Shi, R.C. Jian-Gang Zhu Lal, B. Malhotra, S. Stafford, D. Russak, M. Doherty, S.A. |
| description | In this article, we present an experimental study of the overwrite degradation in high speed recording. Recorded hard and easy transitions were directly characterized and correlated to medium speed, write current waveform and media properties. It has been found that, when high medium speed becomes greater than the bubble growth speed, the transition will be recorded when the field gradient is poor, which results in not only large hard transition shift, but also hard transition broadening. Slow field rise time causes further degradation due to the effective slowing down of the bubble growth speed. Write current overshoot can significantly suppress the degradation. Medium coercivity and its time dependence also have shown a direct effect on the overwrite degradation. |
| doi_str_mv | 10.1109/20.800881 |
| format | Article |
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Recorded hard and easy transitions were directly characterized and correlated to medium speed, write current waveform and media properties. It has been found that, when high medium speed becomes greater than the bubble growth speed, the transition will be recorded when the field gradient is poor, which results in not only large hard transition shift, but also hard transition broadening. Slow field rise time causes further degradation due to the effective slowing down of the bubble growth speed. Write current overshoot can significantly suppress the degradation. Medium coercivity and its time dependence also have shown a direct effect on the overwrite degradation.</description><identifier>ISSN: 0018-9464</identifier><identifier>EISSN: 1941-0069</identifier><identifier>DOI: 10.1109/20.800881</identifier><identifier>CODEN: IEMGAQ</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Applied sciences ; Coercive force ; Current measurement ; Degradation ; Disk recording ; Electronics ; Exact sciences and technology ; Frequency ; High temperature superconductors ; Magnetic devices ; Magnetic heads ; Magnetic recording ; Other magnetic recording and storage devices (including tapes, disks, and drums) ; Semiconductor electronics. Microelectronics. Optoelectronics. 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Recorded hard and easy transitions were directly characterized and correlated to medium speed, write current waveform and media properties. It has been found that, when high medium speed becomes greater than the bubble growth speed, the transition will be recorded when the field gradient is poor, which results in not only large hard transition shift, but also hard transition broadening. Slow field rise time causes further degradation due to the effective slowing down of the bubble growth speed. Write current overshoot can significantly suppress the degradation. Medium coercivity and its time dependence also have shown a direct effect on the overwrite degradation.</description><subject>Applied sciences</subject><subject>Coercive force</subject><subject>Current measurement</subject><subject>Degradation</subject><subject>Disk recording</subject><subject>Electronics</subject><subject>Exact sciences and technology</subject><subject>Frequency</subject><subject>High temperature superconductors</subject><subject>Magnetic devices</subject><subject>Magnetic heads</subject><subject>Magnetic recording</subject><subject>Other magnetic recording and storage devices (including tapes, disks, and drums)</subject><subject>Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices</subject><subject>Transistors</subject><subject>Velocity measurement</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNqFkD1PwzAQhi0EEqUwsDJlQEgMKXeJndgjqviSKrHQ2XLsS2uUJsVOQfx7GqWCkel0ep97TnoZu0SYIYK6y2AmAaTEIzZBxTEFKNQxmwCgTBUv-Ck7i_F9v3KBMGFq2ToKsTet8-0q6T4pfAXfU1J3IVn71TqJWyKXbMyqpd7bJJDtwsCes5PaNJEuDnPKlo8Pb_PndPH69DK_X6Q2z8s-5bLitihtqRwWmCnHM4TKCuEKrFSVmdKpiqysxZBXplScqrrIyQkBZCCfspvRuw3dx45irzc-Wmoa01K3izqTPJOilP-DQiheqsF4O4I2dDEGqvU2-I0J3xpBDy3qDPTY4p69PkhNtKapg2mtj38HqDCH4ffViHki-k0Pjh-Mdnjb</recordid><startdate>19990901</startdate><enddate>19990901</enddate><creator>Shi, R.C.</creator><creator>Jian-Gang Zhu</creator><creator>Lal, B.</creator><creator>Malhotra, S.</creator><creator>Stafford, D.</creator><creator>Russak, M.</creator><creator>Doherty, S.A.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><scope>RIA</scope><scope>RIE</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>19990901</creationdate><title>Understanding overwrite for high speed magnetic recording</title><author>Shi, R.C. ; Jian-Gang Zhu ; Lal, B. ; Malhotra, S. ; Stafford, D. ; Russak, M. ; Doherty, S.A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c337t-48b4c67c79d16129d4210bc55d61b9b2a7d9bec8f5d161ba794ebf63ed550ea03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1999</creationdate><topic>Applied sciences</topic><topic>Coercive force</topic><topic>Current measurement</topic><topic>Degradation</topic><topic>Disk recording</topic><topic>Electronics</topic><topic>Exact sciences and technology</topic><topic>Frequency</topic><topic>High temperature superconductors</topic><topic>Magnetic devices</topic><topic>Magnetic heads</topic><topic>Magnetic recording</topic><topic>Other magnetic recording and storage devices (including tapes, disks, and drums)</topic><topic>Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices</topic><topic>Transistors</topic><topic>Velocity measurement</topic><toplevel>online_resources</toplevel><creatorcontrib>Shi, R.C.</creatorcontrib><creatorcontrib>Jian-Gang Zhu</creatorcontrib><creatorcontrib>Lal, B.</creatorcontrib><creatorcontrib>Malhotra, S.</creatorcontrib><creatorcontrib>Stafford, D.</creatorcontrib><creatorcontrib>Russak, M.</creatorcontrib><creatorcontrib>Doherty, S.A.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE transactions on magnetics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Shi, R.C.</au><au>Jian-Gang Zhu</au><au>Lal, B.</au><au>Malhotra, S.</au><au>Stafford, D.</au><au>Russak, M.</au><au>Doherty, S.A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Understanding overwrite for high speed magnetic recording</atitle><jtitle>IEEE transactions on magnetics</jtitle><stitle>TMAG</stitle><date>1999-09-01</date><risdate>1999</risdate><volume>35</volume><issue>5</issue><spage>2532</spage><epage>2534</epage><pages>2532-2534</pages><issn>0018-9464</issn><eissn>1941-0069</eissn><coden>IEMGAQ</coden><abstract>In this article, we present an experimental study of the overwrite degradation in high speed recording. Recorded hard and easy transitions were directly characterized and correlated to medium speed, write current waveform and media properties. It has been found that, when high medium speed becomes greater than the bubble growth speed, the transition will be recorded when the field gradient is poor, which results in not only large hard transition shift, but also hard transition broadening. Slow field rise time causes further degradation due to the effective slowing down of the bubble growth speed. Write current overshoot can significantly suppress the degradation. Medium coercivity and its time dependence also have shown a direct effect on the overwrite degradation.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/20.800881</doi><tpages>3</tpages></addata></record> |
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| ispartof | IEEE transactions on magnetics, 1999-09, Vol.35 (5), p.2532-2534 |
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| source | IEEE Electronic Library (IEL) |
| subjects | Applied sciences Coercive force Current measurement Degradation Disk recording Electronics Exact sciences and technology Frequency High temperature superconductors Magnetic devices Magnetic heads Magnetic recording Other magnetic recording and storage devices (including tapes, disks, and drums) Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Transistors Velocity measurement |
| title | Understanding overwrite for high speed magnetic recording |
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