Magnetic and structural properties of FePt-FeRh exchange spring films for thermally assisted magnetic recording media
Recently a novel media structure for thermally assisted magnetic recording was proposed consisting of a layer of FePt exchange coupled to a FeRh layer. The FePt forms a high magnetocrystalline anisotropy, high coercivity ferromagnetic layer. The FeRh layer is antiferromagnetic at room temperature, b...
Gespeichert in:
| Veröffentlicht in: | IEEE transactions on magnetics 2004-07, Vol.40 (4), p.2537-2542 |
|---|---|
| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 2542 |
|---|---|
| container_issue | 4 |
| container_start_page | 2537 |
| container_title | IEEE transactions on magnetics |
| container_volume | 40 |
| creator | Thiele, J.-U. Maat, S. Robertson, J.L. Fullerton, E.E. |
| description | Recently a novel media structure for thermally assisted magnetic recording was proposed consisting of a layer of FePt exchange coupled to a FeRh layer. The FePt forms a high magnetocrystalline anisotropy, high coercivity ferromagnetic layer. The FeRh layer is antiferromagnetic at room temperature, but upon heating above a transition temperature becomes ferromagnetic with a large magnetic moment and low magnetocrystalline anisotropy. The coupled ferromagnetic FePt and FeRh layers form an exchange-spring system significantly lowering the coercive field of the composite system compared to a single layer of FePt. This feature opens intriguing possibilities for media applications for thermally assisted magnetic recording where the ferromagnetic phase of FeRh is exploited to help write the media while the low-temperature antiferromagnetic phase supports the long-term stability. Here temperature-dependent structural and magnetic measurements of undoped and doped FeRh single layer and FePt-FeRh bilayer films are presented and the promises and challenges of the exchange spring media structure are discussed. |
| doi_str_mv | 10.1109/TMAG.2004.829325 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_RIE</sourceid><recordid>TN_cdi_osti_scitechconnect_978065</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><ieee_id>1325561</ieee_id><sourcerecordid>2428019881</sourcerecordid><originalsourceid>FETCH-LOGICAL-c519t-4bf5fd1310922f32d0c15bf5621c7be0c90521161055ce4319db08b462abc2c53</originalsourceid><addsrcrecordid>eNqNkc9rFDEUxwdRcK3eBS9R0Nus72WS7ORYSrcKLYrUc8hk3uymzI81yUD735thKoWePIUkn_eB7_sWxXuELSLor7c351dbDiC2NdcVly-KDWqBJYDSL4sNANalFkq8Lt7EeJevQiJsivnGHkZK3jE7tiymMLs0B9uzU5hOFJKnyKaO7elnKvf068jo3h3teCAWT8GPB9b5foismwJLRwqD7fsHZmP0MVHLhn_yQG4K7cIP1Hr7tnjV2T7Su8fzrPi9v7y9-FZe_7j6fnF-XTqJOpWi6WTXYpXzcd5VvAWHMr8pjm7XEDgNkiMqBCkdiQp120DdCMVt47iT1VnxcfVOMXkTnU_kjm4aR3LJ6F0NamG-rExO_GemmMzgo6O-tyNNczS83kmBWv0HWOkKJGbw0zPwbprDmIOauhYIFSjIEKyQC1OMgTqT9znY8GAQzNKoWRo1S6NmbTSPfH702uhs3wU7Oh-f5tQShy_qDyvniejpOyukwuovm-ipQA</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>884103060</pqid></control><display><type>article</type><title>Magnetic and structural properties of FePt-FeRh exchange spring films for thermally assisted magnetic recording media</title><source>IEEE Electronic Library (IEL)</source><creator>Thiele, J.-U. ; Maat, S. ; Robertson, J.L. ; Fullerton, E.E.</creator><creatorcontrib>Thiele, J.-U. ; Maat, S. ; Robertson, J.L. ; Fullerton, E.E. ; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States) ; High Flux Isotope Reactor</creatorcontrib><description>Recently a novel media structure for thermally assisted magnetic recording was proposed consisting of a layer of FePt exchange coupled to a FeRh layer. The FePt forms a high magnetocrystalline anisotropy, high coercivity ferromagnetic layer. The FeRh layer is antiferromagnetic at room temperature, but upon heating above a transition temperature becomes ferromagnetic with a large magnetic moment and low magnetocrystalline anisotropy. The coupled ferromagnetic FePt and FeRh layers form an exchange-spring system significantly lowering the coercive field of the composite system compared to a single layer of FePt. This feature opens intriguing possibilities for media applications for thermally assisted magnetic recording where the ferromagnetic phase of FeRh is exploited to help write the media while the low-temperature antiferromagnetic phase supports the long-term stability. Here temperature-dependent structural and magnetic measurements of undoped and doped FeRh single layer and FePt-FeRh bilayer films are presented and the promises and challenges of the exchange spring media structure are discussed.</description><identifier>ISSN: 0018-9464</identifier><identifier>EISSN: 1941-0069</identifier><identifier>DOI: 10.1109/TMAG.2004.829325</identifier><identifier>CODEN: IEMGAQ</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Anisotropic magnetoresistance ; Antiferromagnetic materials ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Exact sciences and technology ; Heat-assisted magnetic recording ; HEATING ; IRON ALLOYS ; Magnetic anisotropy ; Magnetic fields ; Magnetic films ; MAGNETIC MOMENTS ; MAGNETIC PROPERTIES ; Magnetic properties and materials ; Magnetic tape ; MAGNETIC TAPES ; Magnetism ; MATERIALS SCIENCE ; MORPHOLOGY ; Perpendicular magnetic anisotropy ; PHASE TRANSFORMATIONS ; Physics ; PLATINUM ALLOYS ; RHODIUM ALLOYS ; Springs ; Temperature ; TEMPERATURE DEPENDENCE</subject><ispartof>IEEE transactions on magnetics, 2004-07, Vol.40 (4), p.2537-2542</ispartof><rights>2004 INIST-CNRS</rights><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2004</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c519t-4bf5fd1310922f32d0c15bf5621c7be0c90521161055ce4319db08b462abc2c53</citedby><cites>FETCH-LOGICAL-c519t-4bf5fd1310922f32d0c15bf5621c7be0c90521161055ce4319db08b462abc2c53</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/1325561$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>230,309,310,314,780,784,789,790,796,885,23930,23931,25140,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/1325561$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16065320$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/978065$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Thiele, J.-U.</creatorcontrib><creatorcontrib>Maat, S.</creatorcontrib><creatorcontrib>Robertson, J.L.</creatorcontrib><creatorcontrib>Fullerton, E.E.</creatorcontrib><creatorcontrib>Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)</creatorcontrib><creatorcontrib>High Flux Isotope Reactor</creatorcontrib><title>Magnetic and structural properties of FePt-FeRh exchange spring films for thermally assisted magnetic recording media</title><title>IEEE transactions on magnetics</title><addtitle>TMAG</addtitle><description>Recently a novel media structure for thermally assisted magnetic recording was proposed consisting of a layer of FePt exchange coupled to a FeRh layer. The FePt forms a high magnetocrystalline anisotropy, high coercivity ferromagnetic layer. The FeRh layer is antiferromagnetic at room temperature, but upon heating above a transition temperature becomes ferromagnetic with a large magnetic moment and low magnetocrystalline anisotropy. The coupled ferromagnetic FePt and FeRh layers form an exchange-spring system significantly lowering the coercive field of the composite system compared to a single layer of FePt. This feature opens intriguing possibilities for media applications for thermally assisted magnetic recording where the ferromagnetic phase of FeRh is exploited to help write the media while the low-temperature antiferromagnetic phase supports the long-term stability. Here temperature-dependent structural and magnetic measurements of undoped and doped FeRh single layer and FePt-FeRh bilayer films are presented and the promises and challenges of the exchange spring media structure are discussed.</description><subject>Anisotropic magnetoresistance</subject><subject>Antiferromagnetic materials</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Exact sciences and technology</subject><subject>Heat-assisted magnetic recording</subject><subject>HEATING</subject><subject>IRON ALLOYS</subject><subject>Magnetic anisotropy</subject><subject>Magnetic fields</subject><subject>Magnetic films</subject><subject>MAGNETIC MOMENTS</subject><subject>MAGNETIC PROPERTIES</subject><subject>Magnetic properties and materials</subject><subject>Magnetic tape</subject><subject>MAGNETIC TAPES</subject><subject>Magnetism</subject><subject>MATERIALS SCIENCE</subject><subject>MORPHOLOGY</subject><subject>Perpendicular magnetic anisotropy</subject><subject>PHASE TRANSFORMATIONS</subject><subject>Physics</subject><subject>PLATINUM ALLOYS</subject><subject>RHODIUM ALLOYS</subject><subject>Springs</subject><subject>Temperature</subject><subject>TEMPERATURE DEPENDENCE</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>eNqNkc9rFDEUxwdRcK3eBS9R0Nus72WS7ORYSrcKLYrUc8hk3uymzI81yUD735thKoWePIUkn_eB7_sWxXuELSLor7c351dbDiC2NdcVly-KDWqBJYDSL4sNANalFkq8Lt7EeJevQiJsivnGHkZK3jE7tiymMLs0B9uzU5hOFJKnyKaO7elnKvf068jo3h3teCAWT8GPB9b5foismwJLRwqD7fsHZmP0MVHLhn_yQG4K7cIP1Hr7tnjV2T7Su8fzrPi9v7y9-FZe_7j6fnF-XTqJOpWi6WTXYpXzcd5VvAWHMr8pjm7XEDgNkiMqBCkdiQp120DdCMVt47iT1VnxcfVOMXkTnU_kjm4aR3LJ6F0NamG-rExO_GemmMzgo6O-tyNNczS83kmBWv0HWOkKJGbw0zPwbprDmIOauhYIFSjIEKyQC1OMgTqT9znY8GAQzNKoWRo1S6NmbTSPfH702uhs3wU7Oh-f5tQShy_qDyvniejpOyukwuovm-ipQA</recordid><startdate>20040701</startdate><enddate>20040701</enddate><creator>Thiele, J.-U.</creator><creator>Maat, S.</creator><creator>Robertson, J.L.</creator><creator>Fullerton, E.E.</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>OTOTI</scope></search><sort><creationdate>20040701</creationdate><title>Magnetic and structural properties of FePt-FeRh exchange spring films for thermally assisted magnetic recording media</title><author>Thiele, J.-U. ; Maat, S. ; Robertson, J.L. ; Fullerton, E.E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c519t-4bf5fd1310922f32d0c15bf5621c7be0c90521161055ce4319db08b462abc2c53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Anisotropic magnetoresistance</topic><topic>Antiferromagnetic materials</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Exact sciences and technology</topic><topic>Heat-assisted magnetic recording</topic><topic>HEATING</topic><topic>IRON ALLOYS</topic><topic>Magnetic anisotropy</topic><topic>Magnetic fields</topic><topic>Magnetic films</topic><topic>MAGNETIC MOMENTS</topic><topic>MAGNETIC PROPERTIES</topic><topic>Magnetic properties and materials</topic><topic>Magnetic tape</topic><topic>MAGNETIC TAPES</topic><topic>Magnetism</topic><topic>MATERIALS SCIENCE</topic><topic>MORPHOLOGY</topic><topic>Perpendicular magnetic anisotropy</topic><topic>PHASE TRANSFORMATIONS</topic><topic>Physics</topic><topic>PLATINUM ALLOYS</topic><topic>RHODIUM ALLOYS</topic><topic>Springs</topic><topic>Temperature</topic><topic>TEMPERATURE DEPENDENCE</topic><toplevel>online_resources</toplevel><creatorcontrib>Thiele, J.-U.</creatorcontrib><creatorcontrib>Maat, S.</creatorcontrib><creatorcontrib>Robertson, J.L.</creatorcontrib><creatorcontrib>Fullerton, E.E.</creatorcontrib><creatorcontrib>Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)</creatorcontrib><creatorcontrib>High Flux Isotope Reactor</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><collection>OSTI.GOV</collection><jtitle>IEEE transactions on magnetics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Thiele, J.-U.</au><au>Maat, S.</au><au>Robertson, J.L.</au><au>Fullerton, E.E.</au><aucorp>Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)</aucorp><aucorp>High Flux Isotope Reactor</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Magnetic and structural properties of FePt-FeRh exchange spring films for thermally assisted magnetic recording media</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>2537</spage><epage>2542</epage><pages>2537-2542</pages><issn>0018-9464</issn><eissn>1941-0069</eissn><coden>IEMGAQ</coden><abstract>Recently a novel media structure for thermally assisted magnetic recording was proposed consisting of a layer of FePt exchange coupled to a FeRh layer. The FePt forms a high magnetocrystalline anisotropy, high coercivity ferromagnetic layer. The FeRh layer is antiferromagnetic at room temperature, but upon heating above a transition temperature becomes ferromagnetic with a large magnetic moment and low magnetocrystalline anisotropy. The coupled ferromagnetic FePt and FeRh layers form an exchange-spring system significantly lowering the coercive field of the composite system compared to a single layer of FePt. This feature opens intriguing possibilities for media applications for thermally assisted magnetic recording where the ferromagnetic phase of FeRh is exploited to help write the media while the low-temperature antiferromagnetic phase supports the long-term stability. Here temperature-dependent structural and magnetic measurements of undoped and doped FeRh single layer and FePt-FeRh bilayer films are presented and the promises and challenges of the exchange spring media structure are discussed.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TMAG.2004.829325</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | ISSN: 0018-9464 |
| ispartof | IEEE transactions on magnetics, 2004-07, Vol.40 (4), p.2537-2542 |
| issn | 0018-9464 1941-0069 |
| language | eng |
| recordid | cdi_osti_scitechconnect_978065 |
| source | IEEE Electronic Library (IEL) |
| subjects | Anisotropic magnetoresistance Antiferromagnetic materials Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Heat-assisted magnetic recording HEATING IRON ALLOYS Magnetic anisotropy Magnetic fields Magnetic films MAGNETIC MOMENTS MAGNETIC PROPERTIES Magnetic properties and materials Magnetic tape MAGNETIC TAPES Magnetism MATERIALS SCIENCE MORPHOLOGY Perpendicular magnetic anisotropy PHASE TRANSFORMATIONS Physics PLATINUM ALLOYS RHODIUM ALLOYS Springs Temperature TEMPERATURE DEPENDENCE |
| title | Magnetic and structural properties of FePt-FeRh exchange spring films for thermally assisted magnetic recording media |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-23T05%3A24%3A32IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_RIE&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Magnetic%20and%20structural%20properties%20of%20FePt-FeRh%20exchange%20spring%20films%20for%20thermally%20assisted%20magnetic%20recording%20media&rft.jtitle=IEEE%20transactions%20on%20magnetics&rft.au=Thiele,%20J.-U.&rft.aucorp=Oak%20Ridge%20National%20Lab.%20(ORNL),%20Oak%20Ridge,%20TN%20(United%20States)&rft.date=2004-07-01&rft.volume=40&rft.issue=4&rft.spage=2537&rft.epage=2542&rft.pages=2537-2542&rft.issn=0018-9464&rft.eissn=1941-0069&rft.coden=IEMGAQ&rft_id=info:doi/10.1109/TMAG.2004.829325&rft_dat=%3Cproquest_RIE%3E2428019881%3C/proquest_RIE%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=884103060&rft_id=info:pmid/&rft_ieee_id=1325561&rfr_iscdi=true |