Dynamic head characterization in the presence of reader nonlinear distortion
Nonlinear response in magnetostrictive sensors significantly affects the spin-stand parametric measurements used to characterize writer and reader performance of recording heads. A simple production level test defined as the nonlinear distortion (NLD) ratio was used to quantify the degree of reader...
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| Veröffentlicht in: | IEEE transactions on magnetics 2004-07, Vol.40 (4), p.1963-1968 |
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| container_end_page | 1968 |
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| container_issue | 4 |
| container_start_page | 1963 |
| container_title | IEEE transactions on magnetics |
| container_volume | 40 |
| creator | Chang, T.Y. Seagle, D. Manickam, M. |
| description | Nonlinear response in magnetostrictive sensors significantly affects the spin-stand parametric measurements used to characterize writer and reader performance of recording heads. A simple production level test defined as the nonlinear distortion (NLD) ratio was used to quantify the degree of reader nonlinearity. A positive NLD value represents the presence of reader distortion while a value of zero represents no distortion. On a large population of heads tested, the median NLD value was 0.25, which is equivalent to an amplitude loss of 10% for an isolated pulse due to reader saturation. A detailed analysis of the measured data on nonlinear transition shift, partial erasure, and PW50 of these production heads show that greater than 50% of the measured variance is due to readback nonlinear distortion rather than true performance variation of the device. |
| doi_str_mv | 10.1109/TMAG.2003.821198 |
| format | Article |
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A simple production level test defined as the nonlinear distortion (NLD) ratio was used to quantify the degree of reader nonlinearity. A positive NLD value represents the presence of reader distortion while a value of zero represents no distortion. On a large population of heads tested, the median NLD value was 0.25, which is equivalent to an amplitude loss of 10% for an isolated pulse due to reader saturation. A detailed analysis of the measured data on nonlinear transition shift, partial erasure, and PW50 of these production heads show that greater than 50% of the measured variance is due to readback nonlinear distortion rather than true performance variation of the device.</description><identifier>ISSN: 0018-9464</identifier><identifier>EISSN: 1941-0069</identifier><identifier>DOI: 10.1109/TMAG.2003.821198</identifier><identifier>CODEN: IEMGAQ</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Analysis of variance ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Distortion measurement ; Exact sciences and technology ; Magnetic heads ; Magnetic properties and materials ; Magnetic sensors ; Magnetism ; Magnetostriction ; Nonlinear distortion ; Physics ; Production ; Saturation magnetization ; Sensor phenomena and characterization ; Testing</subject><ispartof>IEEE transactions on magnetics, 2004-07, Vol.40 (4), p.1963-1968</ispartof><rights>2004 INIST-CNRS</rights><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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A simple production level test defined as the nonlinear distortion (NLD) ratio was used to quantify the degree of reader nonlinearity. A positive NLD value represents the presence of reader distortion while a value of zero represents no distortion. On a large population of heads tested, the median NLD value was 0.25, which is equivalent to an amplitude loss of 10% for an isolated pulse due to reader saturation. A detailed analysis of the measured data on nonlinear transition shift, partial erasure, and PW50 of these production heads show that greater than 50% of the measured variance is due to readback nonlinear distortion rather than true performance variation of the device.</description><subject>Analysis of variance</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Distortion measurement</subject><subject>Exact sciences and technology</subject><subject>Magnetic heads</subject><subject>Magnetic properties and materials</subject><subject>Magnetic sensors</subject><subject>Magnetism</subject><subject>Magnetostriction</subject><subject>Nonlinear distortion</subject><subject>Physics</subject><subject>Production</subject><subject>Saturation magnetization</subject><subject>Sensor phenomena and characterization</subject><subject>Testing</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpdkE1rGzEQhkVoIK7Te6EXUWhv644-VpaOwWmTgEsuyVnI0ggrrLWutD44vz67bCDQywzDPO8wPIR8ZbBiDMyvp783dysOIFaaM2b0BVkwI1kDoMwnsgBgujFSySvyudaXcZQtgwXZ3p6zOyRP9-gC9XtXnB-wpFc3pD7TlOmwR3osWDF7pH2kZQSx0NznLmV0hYZUh75M-DW5jK6r-OW9L8nzn99Pm_tm-3j3sLnZNl4AH5q1D4IHLteKReHCbqdFCya0u9AqMAINN9KLADIGFrWP3qzDWkWUIkrleBBL8nO-eyz9vxPWwR5S9dh1LmN_qpZrLqVmZgS__we-9KeSx9-s1pIBMzBBMEO-9LUWjPZY0sGVs2VgJ7d2cmsnt3Z2O0Z-vN911bsuFpd9qh85BULpsSzJt5lLiPixFrwVyog3fGyCMQ</recordid><startdate>20040701</startdate><enddate>20040701</enddate><creator>Chang, T.Y.</creator><creator>Seagle, D.</creator><creator>Manickam, M.</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></search><sort><creationdate>20040701</creationdate><title>Dynamic head characterization in the presence of reader nonlinear distortion</title><author>Chang, T.Y. ; Seagle, D. ; Manickam, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c302t-7cd32d24761f3adbb83509d5bd56093e9294c3d04fd1f8cfc97d76fe43f46a2d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Analysis of variance</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Distortion measurement</topic><topic>Exact sciences and technology</topic><topic>Magnetic heads</topic><topic>Magnetic properties and materials</topic><topic>Magnetic sensors</topic><topic>Magnetism</topic><topic>Magnetostriction</topic><topic>Nonlinear distortion</topic><topic>Physics</topic><topic>Production</topic><topic>Saturation magnetization</topic><topic>Sensor phenomena and characterization</topic><topic>Testing</topic><toplevel>online_resources</toplevel><creatorcontrib>Chang, T.Y.</creatorcontrib><creatorcontrib>Seagle, D.</creatorcontrib><creatorcontrib>Manickam, M.</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>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><jtitle>IEEE transactions on magnetics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Chang, T.Y.</au><au>Seagle, D.</au><au>Manickam, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dynamic head characterization in the presence of reader nonlinear distortion</atitle><jtitle>IEEE transactions on magnetics</jtitle><stitle>TMAG</stitle><date>2004-07-01</date><risdate>2004</risdate><volume>40</volume><issue>4</issue><spage>1963</spage><epage>1968</epage><pages>1963-1968</pages><issn>0018-9464</issn><eissn>1941-0069</eissn><coden>IEMGAQ</coden><abstract>Nonlinear response in magnetostrictive sensors significantly affects the spin-stand parametric measurements used to characterize writer and reader performance of recording heads. A simple production level test defined as the nonlinear distortion (NLD) ratio was used to quantify the degree of reader nonlinearity. A positive NLD value represents the presence of reader distortion while a value of zero represents no distortion. On a large population of heads tested, the median NLD value was 0.25, which is equivalent to an amplitude loss of 10% for an isolated pulse due to reader saturation. A detailed analysis of the measured data on nonlinear transition shift, partial erasure, and PW50 of these production heads show that greater than 50% of the measured variance is due to readback nonlinear distortion rather than true performance variation of the device.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TMAG.2003.821198</doi><tpages>6</tpages></addata></record> |
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| identifier | ISSN: 0018-9464 |
| ispartof | IEEE transactions on magnetics, 2004-07, Vol.40 (4), p.1963-1968 |
| issn | 0018-9464 1941-0069 |
| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Analysis of variance Condensed matter: electronic structure, electrical, magnetic, and optical properties Distortion measurement Exact sciences and technology Magnetic heads Magnetic properties and materials Magnetic sensors Magnetism Magnetostriction Nonlinear distortion Physics Production Saturation magnetization Sensor phenomena and characterization Testing |
| title | Dynamic head characterization in the presence of reader nonlinear distortion |
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