Micromagnetic modeling of thin-film recording heads
As recording heads become smaller to achieve higher recording densities, their domain structure increasingly influences their performance. Due to the presence of closure domains in the head, for track widths the order of 1 /spl mu/m, the available head flux becomes limited and the asymmetry in the f...
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| Veröffentlicht in: | IEEE transactions on magnetics 1996-05, Vol.32 (3), p.2003-2010 |
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| container_end_page | 2010 |
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| container_issue | 3 |
| container_start_page | 2003 |
| container_title | IEEE transactions on magnetics |
| container_volume | 32 |
| creator | Zhenzhou Guo Della Torre, E. |
| description | As recording heads become smaller to achieve higher recording densities, their domain structure increasingly influences their performance. Due to the presence of closure domains in the head, for track widths the order of 1 /spl mu/m, the available head flux becomes limited and the asymmetry in the flux geometry is increased. To study the problem, this paper presents some micromagnetic calculations on thin-film recording heads. The model computes the domain variations in the head when a field is applied for both permalloy and iron-nitride. It is found that the flux asymmetry is small for small fields, increases to a maximum, and finally disappears at saturation. Possible designs that could reduce this effect are discussed. |
| doi_str_mv | 10.1109/20.492901 |
| format | Article |
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Due to the presence of closure domains in the head, for track widths the order of 1 /spl mu/m, the available head flux becomes limited and the asymmetry in the flux geometry is increased. To study the problem, this paper presents some micromagnetic calculations on thin-film recording heads. The model computes the domain variations in the head when a field is applied for both permalloy and iron-nitride. It is found that the flux asymmetry is small for small fields, increases to a maximum, and finally disappears at saturation. Possible designs that could reduce this effect are discussed.</description><identifier>ISSN: 0018-9464</identifier><identifier>EISSN: 1941-0069</identifier><identifier>DOI: 10.1109/20.492901</identifier><identifier>CODEN: IEMGAQ</identifier><language>eng</language><publisher>IEEE</publisher><subject>Demagnetization ; Geometry ; Magnetic analysis ; Magnetic domains ; Magnetic flux ; Magnetic heads ; Magnetoelasticity ; Magnetostriction ; Micromagnetics ; Transistors</subject><ispartof>IEEE transactions on magnetics, 1996-05, Vol.32 (3), p.2003-2010</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c152t-382a49d668d6c525a85d26ca6a945930d6f63f1a363f7b54e2f77db35d62b4bf3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/492901$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27923,27924,54757</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/492901$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Zhenzhou Guo</creatorcontrib><creatorcontrib>Della Torre, E.</creatorcontrib><title>Micromagnetic modeling of thin-film recording heads</title><title>IEEE transactions on magnetics</title><addtitle>TMAG</addtitle><description>As recording heads become smaller to achieve higher recording densities, their domain structure increasingly influences their performance. Due to the presence of closure domains in the head, for track widths the order of 1 /spl mu/m, the available head flux becomes limited and the asymmetry in the flux geometry is increased. To study the problem, this paper presents some micromagnetic calculations on thin-film recording heads. The model computes the domain variations in the head when a field is applied for both permalloy and iron-nitride. It is found that the flux asymmetry is small for small fields, increases to a maximum, and finally disappears at saturation. Possible designs that could reduce this effect are discussed.</description><subject>Demagnetization</subject><subject>Geometry</subject><subject>Magnetic analysis</subject><subject>Magnetic domains</subject><subject>Magnetic flux</subject><subject>Magnetic heads</subject><subject>Magnetoelasticity</subject><subject>Magnetostriction</subject><subject>Micromagnetics</subject><subject>Transistors</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1996</creationdate><recordtype>article</recordtype><recordid>eNo9kL1PwzAQxS0EEqEwsDJlQmJI8XfiEVUUkIpYYLYc-9wa5aPY6cB_j6tULHe6d7970j2EbgleEoLVI8VLrqjC5AwVRHFSYSzVOSowJk2luOSX6Cql7zxyQXCB2HuwcezNdoAp2LIfHXRh2JajL6ddGCofur6MYMfojvIOjEvX6MKbLsHNqS_Q1_r5c_VabT5e3lZPm8oSQaeKNdRw5aRsnLSCCtMIR6U10iguFMNOesk8MSzXuhUcqK9r1zLhJG1569kC3c---zj-HCBNug_JQteZAcZD0rTJp9k-gw8zmF9JKYLX-xh6E381wfoYi6ZYz7Fk9m5mAwD8c6flH-_xW9I</recordid><startdate>19960501</startdate><enddate>19960501</enddate><creator>Zhenzhou Guo</creator><creator>Della Torre, E.</creator><general>IEEE</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>19960501</creationdate><title>Micromagnetic modeling of thin-film recording heads</title><author>Zhenzhou Guo ; Della Torre, E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c152t-382a49d668d6c525a85d26ca6a945930d6f63f1a363f7b54e2f77db35d62b4bf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1996</creationdate><topic>Demagnetization</topic><topic>Geometry</topic><topic>Magnetic analysis</topic><topic>Magnetic domains</topic><topic>Magnetic flux</topic><topic>Magnetic heads</topic><topic>Magnetoelasticity</topic><topic>Magnetostriction</topic><topic>Micromagnetics</topic><topic>Transistors</topic><toplevel>online_resources</toplevel><creatorcontrib>Zhenzhou Guo</creatorcontrib><creatorcontrib>Della Torre, E.</creatorcontrib><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>Zhenzhou Guo</au><au>Della Torre, E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Micromagnetic modeling of thin-film recording heads</atitle><jtitle>IEEE transactions on magnetics</jtitle><stitle>TMAG</stitle><date>1996-05-01</date><risdate>1996</risdate><volume>32</volume><issue>3</issue><spage>2003</spage><epage>2010</epage><pages>2003-2010</pages><issn>0018-9464</issn><eissn>1941-0069</eissn><coden>IEMGAQ</coden><abstract>As recording heads become smaller to achieve higher recording densities, their domain structure increasingly influences their performance. Due to the presence of closure domains in the head, for track widths the order of 1 /spl mu/m, the available head flux becomes limited and the asymmetry in the flux geometry is increased. To study the problem, this paper presents some micromagnetic calculations on thin-film recording heads. The model computes the domain variations in the head when a field is applied for both permalloy and iron-nitride. It is found that the flux asymmetry is small for small fields, increases to a maximum, and finally disappears at saturation. Possible designs that could reduce this effect are discussed.</abstract><pub>IEEE</pub><doi>10.1109/20.492901</doi><tpages>8</tpages></addata></record> |
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| issn | 0018-9464 1941-0069 |
| language | eng |
| recordid | cdi_crossref_primary_10_1109_20_492901 |
| source | IEEE Electronic Library (IEL) |
| subjects | Demagnetization Geometry Magnetic analysis Magnetic domains Magnetic flux Magnetic heads Magnetoelasticity Magnetostriction Micromagnetics Transistors |
| title | Micromagnetic modeling of thin-film recording heads |
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