Effect of Stress on Magnetic Performance of GMR Head Used for Hard-Disk Drive
The effect of stress on the magnetic performance of a giant magneto-resistive (GMR) head was investigated. The stress in the GMR head consists of residual stress caused by thin-film processing and thermal stress due to heat dissipation in the GMR element. When the difference between the in-plane str...
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| Veröffentlicht in: | JSME International Journal Series A Solid Mechanics and Material Engineering 2004, Vol.47(1), pp.62-69 |
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| container_end_page | 69 |
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| container_issue | 1 |
| container_start_page | 62 |
| container_title | JSME International Journal Series A Solid Mechanics and Material Engineering |
| container_volume | 47 |
| creator | NAKA, Yasuhiro DOI, Hiroaki KOYANAGI, Hiroaki ISHIKAWA, Chiaki |
| description | The effect of stress on the magnetic performance of a giant magneto-resistive (GMR) head was investigated. The stress in the GMR head consists of residual stress caused by thin-film processing and thermal stress due to heat dissipation in the GMR element. When the difference between the in-plane stresses in the GMR element is large, the output voltage of the head changes; thus, the read characteristic of the hard-disk drive is deteriorated. The stress in the GMR head was analyzed by a three-step finite-element analysis, called zooming FEA, and the magnetic performance of the head under the effect of the stress was calculated. Accordingly, it was found that to reduce the effect of the stress on magnetic performance, the intrinsic stress in the protective layer on the head must be optimized and the temperature rise of the GMR element must be decreased during operation. |
| doi_str_mv | 10.1299/jsmea.47.62 |
| format | Article |
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The stress in the GMR head consists of residual stress caused by thin-film processing and thermal stress due to heat dissipation in the GMR element. When the difference between the in-plane stresses in the GMR element is large, the output voltage of the head changes; thus, the read characteristic of the hard-disk drive is deteriorated. The stress in the GMR head was analyzed by a three-step finite-element analysis, called zooming FEA, and the magnetic performance of the head under the effect of the stress was calculated. Accordingly, it was found that to reduce the effect of the stress on magnetic performance, the intrinsic stress in the protective layer on the head must be optimized and the temperature rise of the GMR element must be decreased during operation.</description><identifier>ISSN: 1344-7912</identifier><identifier>EISSN: 1347-5363</identifier><identifier>DOI: 10.1299/jsmea.47.62</identifier><language>eng</language><publisher>Tokyo: The Japan Society of Mechanical Engineers</publisher><subject>Finite Element Method ; Giant Magneto-Resistive Head ; Hard Disk Drive ; Laminated Construction ; Magnetic Performance ; Residual Stress ; Thermal Stress</subject><ispartof>JSME International Journal Series A Solid Mechanics and Material Engineering, 2004, Vol.47(1), pp.62-69</ispartof><rights>2004 by The Japan Society of Mechanical Engineers</rights><rights>Copyright Japan Science and Technology Agency 2004</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c495t-4f5543f2a49e8a2dce3361625d34f931a337e2ba1358ac9eb71be85ae83e6f5f3</citedby><cites>FETCH-LOGICAL-c495t-4f5543f2a49e8a2dce3361625d34f931a337e2ba1358ac9eb71be85ae83e6f5f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,1877,4010,27900,27901,27902</link.rule.ids></links><search><creatorcontrib>NAKA, Yasuhiro</creatorcontrib><creatorcontrib>DOI, Hiroaki</creatorcontrib><creatorcontrib>KOYANAGI, Hiroaki</creatorcontrib><creatorcontrib>ISHIKAWA, Chiaki</creatorcontrib><title>Effect of Stress on Magnetic Performance of GMR Head Used for Hard-Disk Drive</title><title>JSME International Journal Series A Solid Mechanics and Material Engineering</title><description>The effect of stress on the magnetic performance of a giant magneto-resistive (GMR) head was investigated. The stress in the GMR head consists of residual stress caused by thin-film processing and thermal stress due to heat dissipation in the GMR element. When the difference between the in-plane stresses in the GMR element is large, the output voltage of the head changes; thus, the read characteristic of the hard-disk drive is deteriorated. The stress in the GMR head was analyzed by a three-step finite-element analysis, called zooming FEA, and the magnetic performance of the head under the effect of the stress was calculated. Accordingly, it was found that to reduce the effect of the stress on magnetic performance, the intrinsic stress in the protective layer on the head must be optimized and the temperature rise of the GMR element must be decreased during operation.</description><subject>Finite Element Method</subject><subject>Giant Magneto-Resistive Head</subject><subject>Hard Disk Drive</subject><subject>Laminated Construction</subject><subject>Magnetic Performance</subject><subject>Residual Stress</subject><subject>Thermal Stress</subject><issn>1344-7912</issn><issn>1347-5363</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNpd0EtLw0AQB_BFFCy1J7_AguBFUrPPZG-Krwotio_zMtnMamqa1N1U8NubtlLBy8zA_BiGPyHHLB0zbsz5PC4QxjIba75HBkzILFFCi_3NLJPMMH5IRjFWRZpymUvB0gGZ3XiPrqOtp89dwBhp29AZvDXYVY4-YvBtWEDjcC3uZk90glDS14gl7Td0AqFMrqv4Qa9D9YVH5MBDHXH024fk9fbm5WqSTB_u7q8up4mTRnWJ9EpJ4TlIgznw0qEQmmmuSiG9EQyEyJAXwITKwRksMlZgrgBzgdorL4bkdHt3GdrPFcbOLqrosK6hwXYVLTdc6dyYHp78g_N2FZr-N8ukzmQm1xENydlWudDGGNDbZagWEL4tS-06W7vJ1srMat7ri62exw7ecGch9JHV-GfZtmi-W7l3CBYb8QO56YKj</recordid><startdate>2004</startdate><enddate>2004</enddate><creator>NAKA, Yasuhiro</creator><creator>DOI, Hiroaki</creator><creator>KOYANAGI, Hiroaki</creator><creator>ISHIKAWA, Chiaki</creator><general>The Japan Society of Mechanical Engineers</general><general>Japan Science and Technology Agency</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7TB</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope></search><sort><creationdate>2004</creationdate><title>Effect of Stress on Magnetic Performance of GMR Head Used for Hard-Disk Drive</title><author>NAKA, Yasuhiro ; DOI, Hiroaki ; KOYANAGI, Hiroaki ; ISHIKAWA, Chiaki</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c495t-4f5543f2a49e8a2dce3361625d34f931a337e2ba1358ac9eb71be85ae83e6f5f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Finite Element Method</topic><topic>Giant Magneto-Resistive Head</topic><topic>Hard Disk Drive</topic><topic>Laminated Construction</topic><topic>Magnetic Performance</topic><topic>Residual Stress</topic><topic>Thermal Stress</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>NAKA, Yasuhiro</creatorcontrib><creatorcontrib>DOI, Hiroaki</creatorcontrib><creatorcontrib>KOYANAGI, Hiroaki</creatorcontrib><creatorcontrib>ISHIKAWA, Chiaki</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><jtitle>JSME International Journal Series A Solid Mechanics and Material Engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>NAKA, Yasuhiro</au><au>DOI, Hiroaki</au><au>KOYANAGI, Hiroaki</au><au>ISHIKAWA, Chiaki</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Stress on Magnetic Performance of GMR Head Used for Hard-Disk Drive</atitle><jtitle>JSME International Journal Series A Solid Mechanics and Material Engineering</jtitle><date>2004</date><risdate>2004</risdate><volume>47</volume><issue>1</issue><spage>62</spage><epage>69</epage><pages>62-69</pages><issn>1344-7912</issn><eissn>1347-5363</eissn><abstract>The effect of stress on the magnetic performance of a giant magneto-resistive (GMR) head was investigated. The stress in the GMR head consists of residual stress caused by thin-film processing and thermal stress due to heat dissipation in the GMR element. When the difference between the in-plane stresses in the GMR element is large, the output voltage of the head changes; thus, the read characteristic of the hard-disk drive is deteriorated. The stress in the GMR head was analyzed by a three-step finite-element analysis, called zooming FEA, and the magnetic performance of the head under the effect of the stress was calculated. Accordingly, it was found that to reduce the effect of the stress on magnetic performance, the intrinsic stress in the protective layer on the head must be optimized and the temperature rise of the GMR element must be decreased during operation.</abstract><cop>Tokyo</cop><pub>The Japan Society of Mechanical Engineers</pub><doi>10.1299/jsmea.47.62</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| source | J-STAGE Free; EZB-FREE-00999 freely available EZB journals |
| subjects | Finite Element Method Giant Magneto-Resistive Head Hard Disk Drive Laminated Construction Magnetic Performance Residual Stress Thermal Stress |
| title | Effect of Stress on Magnetic Performance of GMR Head Used for Hard-Disk Drive |
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