Design consideration of ultrahigh-density perpendicular magnetic recording media
Design consideration of double-layered perpendicular magnetic recording media for ultrahigh-density recording was studied based on a micromagnetic model. It was found that the introduction of an appropriate exchange coupling between grains remarkably improves the recording resolution of the media. T...
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| Veröffentlicht in: | IEEE transactions on magnetics 2002-07, Vol.38 (4), p.1615-1621 |
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| container_title | IEEE transactions on magnetics |
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| creator | Honda, N. Ouchi, K. Iwasaki, S.-I. |
| description | Design consideration of double-layered perpendicular magnetic recording media for ultrahigh-density recording was studied based on a micromagnetic model. It was found that the introduction of an appropriate exchange coupling between grains remarkably improves the recording resolution of the media. The essential role of the exchange coupling could be understood that it increases the perpendicular M-H loop slope, which has the same contribution to the resolution as the head field gradient. Large values for the product of the M-H loop slope parameter and the head field gradient are expected to result in small transition widths less than 10 nm. Consideration of thermal stability of the media including effects of the demagnetizing field and the M-H loop slope suggested that Co-Cr based media would meet the magnetic properties for recording of 200 Gb/in/sup 2/ but may not for higher densities. Media with higher anisotropy fields like Fe-Pt would be the candidate. |
| doi_str_mv | 10.1109/TMAG.2002.1017744 |
| format | Article |
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It was found that the introduction of an appropriate exchange coupling between grains remarkably improves the recording resolution of the media. The essential role of the exchange coupling could be understood that it increases the perpendicular M-H loop slope, which has the same contribution to the resolution as the head field gradient. Large values for the product of the M-H loop slope parameter and the head field gradient are expected to result in small transition widths less than 10 nm. Consideration of thermal stability of the media including effects of the demagnetizing field and the M-H loop slope suggested that Co-Cr based media would meet the magnetic properties for recording of 200 Gb/in/sup 2/ but may not for higher densities. Media with higher anisotropy fields like Fe-Pt would be the candidate.</description><identifier>ISSN: 0018-9464</identifier><identifier>EISSN: 1941-0069</identifier><identifier>DOI: 10.1109/TMAG.2002.1017744</identifier><identifier>CODEN: IEMGAQ</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Anisotropic magnetoresistance ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Demagnetization ; Demagnetizing ; Density ; Exact sciences and technology ; Iron ; Joining ; Magnetic anisotropy ; Magnetic heads ; Magnetic properties ; Magnetic properties and materials ; Magnetic recording ; Magnetic recording materials ; Magnetism ; Media ; Micromagnetics ; Perpendicular magnetic anisotropy ; Perpendicular magnetic recording ; Physics ; Recording ; Studies of specific magnetic materials ; Thermal stability</subject><ispartof>IEEE transactions on magnetics, 2002-07, Vol.38 (4), p.1615-1621</ispartof><rights>2002 INIST-CNRS</rights><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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It was found that the introduction of an appropriate exchange coupling between grains remarkably improves the recording resolution of the media. The essential role of the exchange coupling could be understood that it increases the perpendicular M-H loop slope, which has the same contribution to the resolution as the head field gradient. Large values for the product of the M-H loop slope parameter and the head field gradient are expected to result in small transition widths less than 10 nm. Consideration of thermal stability of the media including effects of the demagnetizing field and the M-H loop slope suggested that Co-Cr based media would meet the magnetic properties for recording of 200 Gb/in/sup 2/ but may not for higher densities. Media with higher anisotropy fields like Fe-Pt would be the candidate.</description><subject>Anisotropic magnetoresistance</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Demagnetization</subject><subject>Demagnetizing</subject><subject>Density</subject><subject>Exact sciences and technology</subject><subject>Iron</subject><subject>Joining</subject><subject>Magnetic anisotropy</subject><subject>Magnetic heads</subject><subject>Magnetic properties</subject><subject>Magnetic properties and materials</subject><subject>Magnetic recording</subject><subject>Magnetic recording materials</subject><subject>Magnetism</subject><subject>Media</subject><subject>Micromagnetics</subject><subject>Perpendicular magnetic anisotropy</subject><subject>Perpendicular magnetic recording</subject><subject>Physics</subject><subject>Recording</subject><subject>Studies of specific magnetic materials</subject><subject>Thermal stability</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNqF0UFvFCEUB3BiNHGtfgDjZWKinmb73gwwcGxqW01q6qGeCQuPLc0ss8LMod9eNruJxoOeCOH3_kD-jL1FWCOCPr__dnGz7gC6NQIOA-fP2Ao1xxZA6udsBYCq1Vzyl-xVKY91ywXCin3_TCVuU-OmVKKnbOc4pWYKzTLO2T7E7UPrqR7NT82e8p6Sj24ZbW52dptojq7J5KbsY9o2O_LRvmYvgh0LvTmtZ-zH9dX95Zf29u7m6-XFbes48rlFkHKjhfKCOPiNx6A3HLuBW98F6EWQslNBYm_7ALbnWjrfU320GAg7u-nP2Kdj7j5PPxcqs9nF4mgcbaJpKUbDoEW9RFT58Z-yUx1XSsj_wwEBtD7A93_Bx2nJqX7XKMUFaK77ivCIXJ5KyRTMPsedzU8GwRw6M4fOzKEzc-qsznw4Bdvi7BiyTS6W34O9QgEA1b07ukhEf-QeU34B5pGejQ</recordid><startdate>20020701</startdate><enddate>20020701</enddate><creator>Honda, N.</creator><creator>Ouchi, K.</creator><creator>Iwasaki, S.-I.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>RIA</scope><scope>RIE</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><scope>F28</scope><scope>FR3</scope></search><sort><creationdate>20020701</creationdate><title>Design consideration of ultrahigh-density perpendicular magnetic recording media</title><author>Honda, N. ; Ouchi, K. ; Iwasaki, S.-I.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c414t-1066b958d5e40dbd1f9b41274ad2f035f6628f613a3f0a3496cd3e14557e12ab3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Anisotropic magnetoresistance</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Demagnetization</topic><topic>Demagnetizing</topic><topic>Density</topic><topic>Exact sciences and technology</topic><topic>Iron</topic><topic>Joining</topic><topic>Magnetic anisotropy</topic><topic>Magnetic heads</topic><topic>Magnetic properties</topic><topic>Magnetic properties and materials</topic><topic>Magnetic recording</topic><topic>Magnetic recording materials</topic><topic>Magnetism</topic><topic>Media</topic><topic>Micromagnetics</topic><topic>Perpendicular magnetic anisotropy</topic><topic>Perpendicular magnetic recording</topic><topic>Physics</topic><topic>Recording</topic><topic>Studies of specific magnetic materials</topic><topic>Thermal stability</topic><toplevel>online_resources</toplevel><creatorcontrib>Honda, N.</creatorcontrib><creatorcontrib>Ouchi, K.</creatorcontrib><creatorcontrib>Iwasaki, S.-I.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 1998–Present</collection><collection>IEEE/IET Electronic Library</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><jtitle>IEEE transactions on magnetics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Honda, N.</au><au>Ouchi, K.</au><au>Iwasaki, S.-I.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Design consideration of ultrahigh-density perpendicular magnetic recording media</atitle><jtitle>IEEE transactions on magnetics</jtitle><stitle>TMAG</stitle><date>2002-07-01</date><risdate>2002</risdate><volume>38</volume><issue>4</issue><spage>1615</spage><epage>1621</epage><pages>1615-1621</pages><issn>0018-9464</issn><eissn>1941-0069</eissn><coden>IEMGAQ</coden><abstract>Design consideration of double-layered perpendicular magnetic recording media for ultrahigh-density recording was studied based on a micromagnetic model. It was found that the introduction of an appropriate exchange coupling between grains remarkably improves the recording resolution of the media. The essential role of the exchange coupling could be understood that it increases the perpendicular M-H loop slope, which has the same contribution to the resolution as the head field gradient. Large values for the product of the M-H loop slope parameter and the head field gradient are expected to result in small transition widths less than 10 nm. Consideration of thermal stability of the media including effects of the demagnetizing field and the M-H loop slope suggested that Co-Cr based media would meet the magnetic properties for recording of 200 Gb/in/sup 2/ but may not for higher densities. Media with higher anisotropy fields like Fe-Pt would be the candidate.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TMAG.2002.1017744</doi><tpages>7</tpages></addata></record> |
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| subjects | Anisotropic magnetoresistance Condensed matter: electronic structure, electrical, magnetic, and optical properties Demagnetization Demagnetizing Density Exact sciences and technology Iron Joining Magnetic anisotropy Magnetic heads Magnetic properties Magnetic properties and materials Magnetic recording Magnetic recording materials Magnetism Media Micromagnetics Perpendicular magnetic anisotropy Perpendicular magnetic recording Physics Recording Studies of specific magnetic materials Thermal stability |
| title | Design consideration of ultrahigh-density perpendicular magnetic recording media |
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