Steadfast perpendicular exchange coupling in an ultrathin CoO/PtFe double-layer: strain and spin orientation
We report on the exchange coupling and magnetic properties of a strained ultrathin CoO/PtFe double-layer with perpendicular magnetic anisotropy. The cobalt oxide growth by reactive molecular beam epitaxy on a Pt-terminated PtFe/Pt(001) surface gives rise to an hexagonal surface and a monoclinic dist...
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| creator | Lamirand, A D Soares, M M Ramos, A Y Tolentino, H C N DeSantis, M Cezar, J C de Siervo, A Jamet, M |
| description | We report on the exchange coupling and magnetic properties of a strained ultrathin CoO/PtFe double-layer with perpendicular magnetic anisotropy. The cobalt oxide growth by reactive molecular beam epitaxy on a Pt-terminated PtFe/Pt(001) surface gives rise to an hexagonal surface and a monoclinic distorted CoO 3nm film at room temperature. This distorted ultrathin CoO layer couples with the PtFe(001) layer establishing a robust perpendicular exchange bias shift. Soft x-ray absorption spectroscopy provides a full description of the spin orientations in the CoO/PtFe doublelayer. The exchange bias shift is preserved up to the Neel antiferromagnetic ordering temperature of TN=293 K. This unique example of selfsame value for blocking and ordering temperatures, yet identical to the bulk ordering temperature, is likely related to the original strain induced distortion and strengthened interaction between the two well-ordered spin layers. |
| doi_str_mv | 10.48550/arxiv.1309.5288 |
| format | Article |
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The cobalt oxide growth by reactive molecular beam epitaxy on a Pt-terminated PtFe/Pt(001) surface gives rise to an hexagonal surface and a monoclinic distorted CoO 3nm film at room temperature. This distorted ultrathin CoO layer couples with the PtFe(001) layer establishing a robust perpendicular exchange bias shift. Soft x-ray absorption spectroscopy provides a full description of the spin orientations in the CoO/PtFe doublelayer. The exchange bias shift is preserved up to the Neel antiferromagnetic ordering temperature of TN=293 K. This unique example of selfsame value for blocking and ordering temperatures, yet identical to the bulk ordering temperature, is likely related to the original strain induced distortion and strengthened interaction between the two well-ordered spin layers.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.1309.5288</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Antiferromagnetism ; Bias ; Cobalt oxides ; Coupling (molecular) ; Distortion ; Electrons ; Epitaxial growth ; Exchanging ; Magnetic anisotropy ; Magnetic properties ; Magnetism ; Molecular beam epitaxy ; Physics - Materials Science ; Polytetrafluoroethylene ; Soft x rays ; Temperature ; X ray absorption</subject><ispartof>arXiv.org, 2013-09</ispartof><rights>2013. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). 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The cobalt oxide growth by reactive molecular beam epitaxy on a Pt-terminated PtFe/Pt(001) surface gives rise to an hexagonal surface and a monoclinic distorted CoO 3nm film at room temperature. This distorted ultrathin CoO layer couples with the PtFe(001) layer establishing a robust perpendicular exchange bias shift. Soft x-ray absorption spectroscopy provides a full description of the spin orientations in the CoO/PtFe doublelayer. The exchange bias shift is preserved up to the Neel antiferromagnetic ordering temperature of TN=293 K. This unique example of selfsame value for blocking and ordering temperatures, yet identical to the bulk ordering temperature, is likely related to the original strain induced distortion and strengthened interaction between the two well-ordered spin layers.</description><subject>Antiferromagnetism</subject><subject>Bias</subject><subject>Cobalt oxides</subject><subject>Coupling (molecular)</subject><subject>Distortion</subject><subject>Electrons</subject><subject>Epitaxial growth</subject><subject>Exchanging</subject><subject>Magnetic anisotropy</subject><subject>Magnetic properties</subject><subject>Magnetism</subject><subject>Molecular beam epitaxy</subject><subject>Physics - Materials Science</subject><subject>Polytetrafluoroethylene</subject><subject>Soft x rays</subject><subject>Temperature</subject><subject>X ray absorption</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GOX</sourceid><recordid>eNotkE1Lw0AQhhdBsNTePcmC57T7kU023qRYFQoV7D3MJrNtyrqJm420_9609TQzvA_Dw0vIA2fzVCvFFhCOze-cS1bMldD6hkyElDzRqRB3ZNb3B8aYyHKhlJwQ9xURagt9pB2GDn3dVIODQPFY7cHvkFbt0LnG72jjKXg6uBgg7sdj2W4Wn3GFtG4H4zBxcMLwTPsxv6A17btxaUODPkJsWn9Pbi24Hmf_c0q2q9ft8j1Zb94-li_rBBSXiUiz0dcqU5hc2VTWVcYN17lRstBMWs0zW-egEFO0lptCQlYwqAXKXKAyckoer28vTZRdaL4hnMpzI-W5kRF4ugJdaH8G7GN5aIfgR6VSMK20VPmo8AdTJWUD</recordid><startdate>20130920</startdate><enddate>20130920</enddate><creator>Lamirand, A D</creator><creator>Soares, M M</creator><creator>Ramos, A Y</creator><creator>Tolentino, H C N</creator><creator>DeSantis, M</creator><creator>Cezar, J C</creator><creator>de Siervo, A</creator><creator>Jamet, M</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20130920</creationdate><title>Steadfast perpendicular exchange coupling in an ultrathin CoO/PtFe double-layer: strain and spin orientation</title><author>Lamirand, A D ; Soares, M M ; Ramos, A Y ; Tolentino, H C N ; DeSantis, M ; Cezar, J C ; de Siervo, A ; Jamet, M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a513-246331f5b9b75f43dc61b187b539803f816fd7a5ee4eff1b93a690ad2e372e5b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Antiferromagnetism</topic><topic>Bias</topic><topic>Cobalt oxides</topic><topic>Coupling (molecular)</topic><topic>Distortion</topic><topic>Electrons</topic><topic>Epitaxial growth</topic><topic>Exchanging</topic><topic>Magnetic anisotropy</topic><topic>Magnetic properties</topic><topic>Magnetism</topic><topic>Molecular beam epitaxy</topic><topic>Physics - Materials Science</topic><topic>Polytetrafluoroethylene</topic><topic>Soft x rays</topic><topic>Temperature</topic><topic>X ray absorption</topic><toplevel>online_resources</toplevel><creatorcontrib>Lamirand, A D</creatorcontrib><creatorcontrib>Soares, M M</creatorcontrib><creatorcontrib>Ramos, A Y</creatorcontrib><creatorcontrib>Tolentino, H C N</creatorcontrib><creatorcontrib>DeSantis, M</creatorcontrib><creatorcontrib>Cezar, J C</creatorcontrib><creatorcontrib>de Siervo, A</creatorcontrib><creatorcontrib>Jamet, M</creatorcontrib><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Access via ProQuest (Open Access)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><collection>arXiv.org</collection><jtitle>arXiv.org</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lamirand, A D</au><au>Soares, M M</au><au>Ramos, A Y</au><au>Tolentino, H C N</au><au>DeSantis, M</au><au>Cezar, J C</au><au>de Siervo, A</au><au>Jamet, M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Steadfast perpendicular exchange coupling in an ultrathin CoO/PtFe double-layer: strain and spin orientation</atitle><jtitle>arXiv.org</jtitle><date>2013-09-20</date><risdate>2013</risdate><eissn>2331-8422</eissn><abstract>We report on the exchange coupling and magnetic properties of a strained ultrathin CoO/PtFe double-layer with perpendicular magnetic anisotropy. The cobalt oxide growth by reactive molecular beam epitaxy on a Pt-terminated PtFe/Pt(001) surface gives rise to an hexagonal surface and a monoclinic distorted CoO 3nm film at room temperature. This distorted ultrathin CoO layer couples with the PtFe(001) layer establishing a robust perpendicular exchange bias shift. Soft x-ray absorption spectroscopy provides a full description of the spin orientations in the CoO/PtFe doublelayer. The exchange bias shift is preserved up to the Neel antiferromagnetic ordering temperature of TN=293 K. This unique example of selfsame value for blocking and ordering temperatures, yet identical to the bulk ordering temperature, is likely related to the original strain induced distortion and strengthened interaction between the two well-ordered spin layers.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.1309.5288</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Antiferromagnetism Bias Cobalt oxides Coupling (molecular) Distortion Electrons Epitaxial growth Exchanging Magnetic anisotropy Magnetic properties Magnetism Molecular beam epitaxy Physics - Materials Science Polytetrafluoroethylene Soft x rays Temperature X ray absorption |
| title | Steadfast perpendicular exchange coupling in an ultrathin CoO/PtFe double-layer: strain and spin orientation |
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