Impact of Media Design on Track Edge in Perpendicular Magnetic Recording
As track density increases, it has become even more critical to understand the track edge. In this study, the impact of media design on the track edges in perpendicular magnetic recording has been investigated. This study shows that soft under layer thickness and intergranular exchange coupling have...
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| Veröffentlicht in: | IEEE transactions on magnetics 2009-02, Vol.45 (2), p.905-910 |
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| creator | Yong-Chang Feng Hurben, M.J. Nan-Hsiung Yeh Chun-Yang Tseng Anna Zheng Misra, A. Liu, C. Xiaobin Zhu Jury, J.C. Steiner, P. Zhenyong Zhang Hannay, J. Jianhua Xue Li Tang |
| description | As track density increases, it has become even more critical to understand the track edge. In this study, the impact of media design on the track edges in perpendicular magnetic recording has been investigated. This study shows that soft under layer thickness and intergranular exchange coupling have significant impact on both track edge erasure and write width. In the range we studied, head-to-keeper spacing and media coercivity have a strong impact on write width, but not on track edge erasure. On the other hand, media design does not impact transition curvature significantly. Experimental observations were supported by media micromagnetic modeling results and write field simulation using a finite element model. Analyzing the write bubble helps to understand the dependence of adjacent track encroachment on media design. Cross track profiles of various signal-to-noise ratio (SNR) components can provide valuable insights into different track edge mechanisms. |
| doi_str_mv | 10.1109/TMAG.2008.2010673 |
| format | Article |
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In this study, the impact of media design on the track edges in perpendicular magnetic recording has been investigated. This study shows that soft under layer thickness and intergranular exchange coupling have significant impact on both track edge erasure and write width. In the range we studied, head-to-keeper spacing and media coercivity have a strong impact on write width, but not on track edge erasure. On the other hand, media design does not impact transition curvature significantly. Experimental observations were supported by media micromagnetic modeling results and write field simulation using a finite element model. Analyzing the write bubble helps to understand the dependence of adjacent track encroachment on media design. Cross track profiles of various signal-to-noise ratio (SNR) components can provide valuable insights into different track edge mechanisms.</description><identifier>ISSN: 0018-9464</identifier><identifier>EISSN: 1941-0069</identifier><identifier>DOI: 10.1109/TMAG.2008.2010673</identifier><identifier>CODEN: IEMGAQ</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Coercive force ; Computer simulation ; Cross-disciplinary physics: materials science; rheology ; Curvature ; Density ; Encroachment ; erase ; Exact sciences and technology ; exchange ; Finite element methods ; Frequency ; Magnetic heads ; Magnetic recording ; Magnetism ; Materials science ; Mathematical analysis ; Mathematical models ; Media ; Micromagnetics ; Other topics in materials science ; Perpendicular magnetic recording ; Physics ; side-reading ; Signal to noise ratio ; Testing ; track edge ; underlayer ; Writing</subject><ispartof>IEEE transactions on magnetics, 2009-02, Vol.45 (2), p.905-910</ispartof><rights>2015 INIST-CNRS</rights><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2009</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c385t-56c2c3cb5e0a981676fea2c6037cb9656a6f5c1860a901bcc7dbbc073c85432f3</citedby><cites>FETCH-LOGICAL-c385t-56c2c3cb5e0a981676fea2c6037cb9656a6f5c1860a901bcc7dbbc073c85432f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/4782122$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>309,310,314,777,781,786,787,793,23911,23912,25121,27905,27906,54739</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/4782122$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=21658298$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Yong-Chang Feng</creatorcontrib><creatorcontrib>Hurben, M.J.</creatorcontrib><creatorcontrib>Nan-Hsiung Yeh</creatorcontrib><creatorcontrib>Chun-Yang Tseng</creatorcontrib><creatorcontrib>Anna Zheng</creatorcontrib><creatorcontrib>Misra, A.</creatorcontrib><creatorcontrib>Liu, C.</creatorcontrib><creatorcontrib>Xiaobin Zhu</creatorcontrib><creatorcontrib>Jury, J.C.</creatorcontrib><creatorcontrib>Steiner, P.</creatorcontrib><creatorcontrib>Zhenyong Zhang</creatorcontrib><creatorcontrib>Hannay, J.</creatorcontrib><creatorcontrib>Jianhua Xue</creatorcontrib><creatorcontrib>Li Tang</creatorcontrib><title>Impact of Media Design on Track Edge in Perpendicular Magnetic Recording</title><title>IEEE transactions on magnetics</title><addtitle>TMAG</addtitle><description>As track density increases, it has become even more critical to understand the track edge. In this study, the impact of media design on the track edges in perpendicular magnetic recording has been investigated. This study shows that soft under layer thickness and intergranular exchange coupling have significant impact on both track edge erasure and write width. In the range we studied, head-to-keeper spacing and media coercivity have a strong impact on write width, but not on track edge erasure. On the other hand, media design does not impact transition curvature significantly. Experimental observations were supported by media micromagnetic modeling results and write field simulation using a finite element model. Analyzing the write bubble helps to understand the dependence of adjacent track encroachment on media design. Cross track profiles of various signal-to-noise ratio (SNR) components can provide valuable insights into different track edge mechanisms.</description><subject>Coercive force</subject><subject>Computer simulation</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Curvature</subject><subject>Density</subject><subject>Encroachment</subject><subject>erase</subject><subject>Exact sciences and technology</subject><subject>exchange</subject><subject>Finite element methods</subject><subject>Frequency</subject><subject>Magnetic heads</subject><subject>Magnetic recording</subject><subject>Magnetism</subject><subject>Materials science</subject><subject>Mathematical analysis</subject><subject>Mathematical models</subject><subject>Media</subject><subject>Micromagnetics</subject><subject>Other topics in materials science</subject><subject>Perpendicular magnetic recording</subject><subject>Physics</subject><subject>side-reading</subject><subject>Signal to noise ratio</subject><subject>Testing</subject><subject>track edge</subject><subject>underlayer</subject><subject>Writing</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNp9kU9vEzEQxS0EEqHwARAXCwl62uLxv7WPVVvaSo1AKJwt7-xs5LLxBjs58O3ZkKiHHrjMaPR-70mjx9h7EBcAwn9ZLS9vL6QQbh4gbKtesAV4DY0Q1r9kCyHANV5b_Zq9qfVxPrUBsWB395ttxB2fBr6kPkV-TTWtM58yX5WIv_hNvyaeMv9OZUu5T7gfY-HLuM60S8h_EE6lT3n9lr0a4ljp3WmfsZ9fb1ZXd83Dt9v7q8uHBpUzu8ZYlKiwMySid2BbO1CUaIVqsfPW2GgHg-DsLAvoENu-61C0Cp3RSg7qjJ0fc7dl-r2nugubVJHGMWaa9jU4652WRrcz-fm_pNIWXAswgx-fgY_TvuT5i-CM9VLBvzQ4QlimWgsNYVvSJpY_AUQ4VBAOFYRDBeFUwez5dAqOFeM4lJgx1SejBGuc9G7mPhy5RERPsm6dBCnVXxy_jNU</recordid><startdate>20090201</startdate><enddate>20090201</enddate><creator>Yong-Chang Feng</creator><creator>Hurben, M.J.</creator><creator>Nan-Hsiung Yeh</creator><creator>Chun-Yang Tseng</creator><creator>Anna Zheng</creator><creator>Misra, A.</creator><creator>Liu, C.</creator><creator>Xiaobin Zhu</creator><creator>Jury, J.C.</creator><creator>Steiner, P.</creator><creator>Zhenyong Zhang</creator><creator>Hannay, J.</creator><creator>Jianhua Xue</creator><creator>Li Tang</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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In this study, the impact of media design on the track edges in perpendicular magnetic recording has been investigated. This study shows that soft under layer thickness and intergranular exchange coupling have significant impact on both track edge erasure and write width. In the range we studied, head-to-keeper spacing and media coercivity have a strong impact on write width, but not on track edge erasure. On the other hand, media design does not impact transition curvature significantly. Experimental observations were supported by media micromagnetic modeling results and write field simulation using a finite element model. Analyzing the write bubble helps to understand the dependence of adjacent track encroachment on media design. Cross track profiles of various signal-to-noise ratio (SNR) components can provide valuable insights into different track edge mechanisms.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TMAG.2008.2010673</doi><tpages>6</tpages></addata></record> |
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| subjects | Coercive force Computer simulation Cross-disciplinary physics: materials science rheology Curvature Density Encroachment erase Exact sciences and technology exchange Finite element methods Frequency Magnetic heads Magnetic recording Magnetism Materials science Mathematical analysis Mathematical models Media Micromagnetics Other topics in materials science Perpendicular magnetic recording Physics side-reading Signal to noise ratio Testing track edge underlayer Writing |
| title | Impact of Media Design on Track Edge in Perpendicular Magnetic Recording |
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