Coercivity and random interfacial exchange coupling in CoPt/Co films
Hard-soft bilayers are analogous to prototype exchange-biased ferromagnetic–antiferromagnetic systems as the minor loop of the soft layer is biased by the hard, and furthermore they offer bias layer tunability. In sputtered CoPt/Co hard-soft bilayers, we demonstrate that the exchange bias field show...
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| Veröffentlicht in: | Journal of applied physics 2016-03, Vol.119 (12) |
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| container_title | Journal of applied physics |
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| creator | Alexandrakis, V. Kechrakos, D. Moutis, N. Niarchos, D. Hadjipanayis, G. Panagiotopoulos, I. |
| description | Hard-soft bilayers are analogous to prototype exchange-biased ferromagnetic–antiferromagnetic systems as the minor loop of the soft layer is biased by the hard, and furthermore they offer bias layer tunability. In sputtered CoPt/Co hard-soft bilayers, we demonstrate that the exchange bias field shows a linear dependence on the hard layer magnetization, while the coercivity shows a quadratic dependence. Analysis of the minor hysteresis loop features supported by Monte-Carlo simulations provides clear evidence that the coercivity of the soft layer is mainly determined by the tunable randomness of the domain state of the hard layer. |
| doi_str_mv | 10.1063/1.4945027 |
| format | Article |
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In sputtered CoPt/Co hard-soft bilayers, we demonstrate that the exchange bias field shows a linear dependence on the hard layer magnetization, while the coercivity shows a quadratic dependence. Analysis of the minor hysteresis loop features supported by Monte-Carlo simulations provides clear evidence that the coercivity of the soft layer is mainly determined by the tunable randomness of the domain state of the hard layer.</description><identifier>ISSN: 0021-8979</identifier><identifier>EISSN: 1089-7550</identifier><identifier>DOI: 10.1063/1.4945027</identifier><identifier>CODEN: JAPIAU</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Antiferromagnetism ; Applied physics ; Bias ; Cobalt base alloys ; Cobalt compounds ; Coercivity ; Computer simulation ; Dependence ; Exchanging ; Ferromagnetic materials ; Hysteresis loops ; Intermetallic compounds ; Monte Carlo simulation ; Platinum compounds</subject><ispartof>Journal of applied physics, 2016-03, Vol.119 (12)</ispartof><rights>AIP Publishing LLC</rights><rights>2016 AIP Publishing LLC.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c327t-ccec531b0d1f109e2433ffe3c5b4e7389dfa1e760597a035e3b72dcfc4ad18463</citedby><cites>FETCH-LOGICAL-c327t-ccec531b0d1f109e2433ffe3c5b4e7389dfa1e760597a035e3b72dcfc4ad18463</cites><orcidid>0000-0001-5762-076X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/jap/article-lookup/doi/10.1063/1.4945027$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,776,780,790,4498,27901,27902,76353</link.rule.ids></links><search><creatorcontrib>Alexandrakis, V.</creatorcontrib><creatorcontrib>Kechrakos, D.</creatorcontrib><creatorcontrib>Moutis, N.</creatorcontrib><creatorcontrib>Niarchos, D.</creatorcontrib><creatorcontrib>Hadjipanayis, G.</creatorcontrib><creatorcontrib>Panagiotopoulos, I.</creatorcontrib><title>Coercivity and random interfacial exchange coupling in CoPt/Co films</title><title>Journal of applied physics</title><description>Hard-soft bilayers are analogous to prototype exchange-biased ferromagnetic–antiferromagnetic systems as the minor loop of the soft layer is biased by the hard, and furthermore they offer bias layer tunability. 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Analysis of the minor hysteresis loop features supported by Monte-Carlo simulations provides clear evidence that the coercivity of the soft layer is mainly determined by the tunable randomness of the domain state of the hard layer.</description><subject>Antiferromagnetism</subject><subject>Applied physics</subject><subject>Bias</subject><subject>Cobalt base alloys</subject><subject>Cobalt compounds</subject><subject>Coercivity</subject><subject>Computer simulation</subject><subject>Dependence</subject><subject>Exchanging</subject><subject>Ferromagnetic materials</subject><subject>Hysteresis loops</subject><subject>Intermetallic compounds</subject><subject>Monte Carlo simulation</subject><subject>Platinum compounds</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp90E1LAzEQBuAgCtbqwX-w4Elh25lkt9kcZf2Egh70HNJsUlO2mzXZLfbfu6VFD4KXmcM8zDAvIZcIE4QZm-IkE1kOlB-REUIhUp7ncExGABTTQnBxSs5iXAEgFkyMyF3pTdBu47ptopoqCUPx68Q1nQlWaafqxHzpD9UsTaJ939auWQ7TpPSv3bT0iXX1Op6TE6vqaC4OfUzeH-7fyqd0_vL4XN7OU80o71Ktjc4ZLqBCiyAMzRiz1jCdLzLDWSEqq9DwGeSCK2C5YQtOK211piosshkbk6v93jb4z97ETq58H5rhpKRIdw8B0kFd75UOPsZgrGyDW6uwlQhyF5JEeQhpsDd7G7XrVOd884M3PvxC2Vb2P_x38zcpvHS4</recordid><startdate>20160328</startdate><enddate>20160328</enddate><creator>Alexandrakis, V.</creator><creator>Kechrakos, D.</creator><creator>Moutis, N.</creator><creator>Niarchos, D.</creator><creator>Hadjipanayis, G.</creator><creator>Panagiotopoulos, I.</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0001-5762-076X</orcidid></search><sort><creationdate>20160328</creationdate><title>Coercivity and random interfacial exchange coupling in CoPt/Co films</title><author>Alexandrakis, V. ; Kechrakos, D. ; Moutis, N. ; Niarchos, D. ; Hadjipanayis, G. ; Panagiotopoulos, I.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c327t-ccec531b0d1f109e2433ffe3c5b4e7389dfa1e760597a035e3b72dcfc4ad18463</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Antiferromagnetism</topic><topic>Applied physics</topic><topic>Bias</topic><topic>Cobalt base alloys</topic><topic>Cobalt compounds</topic><topic>Coercivity</topic><topic>Computer simulation</topic><topic>Dependence</topic><topic>Exchanging</topic><topic>Ferromagnetic materials</topic><topic>Hysteresis loops</topic><topic>Intermetallic compounds</topic><topic>Monte Carlo simulation</topic><topic>Platinum compounds</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Alexandrakis, V.</creatorcontrib><creatorcontrib>Kechrakos, D.</creatorcontrib><creatorcontrib>Moutis, N.</creatorcontrib><creatorcontrib>Niarchos, D.</creatorcontrib><creatorcontrib>Hadjipanayis, G.</creatorcontrib><creatorcontrib>Panagiotopoulos, I.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Alexandrakis, V.</au><au>Kechrakos, D.</au><au>Moutis, N.</au><au>Niarchos, D.</au><au>Hadjipanayis, G.</au><au>Panagiotopoulos, I.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Coercivity and random interfacial exchange coupling in CoPt/Co films</atitle><jtitle>Journal of applied physics</jtitle><date>2016-03-28</date><risdate>2016</risdate><volume>119</volume><issue>12</issue><issn>0021-8979</issn><eissn>1089-7550</eissn><coden>JAPIAU</coden><abstract>Hard-soft bilayers are analogous to prototype exchange-biased ferromagnetic–antiferromagnetic systems as the minor loop of the soft layer is biased by the hard, and furthermore they offer bias layer tunability. 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| language | eng |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Antiferromagnetism Applied physics Bias Cobalt base alloys Cobalt compounds Coercivity Computer simulation Dependence Exchanging Ferromagnetic materials Hysteresis loops Intermetallic compounds Monte Carlo simulation Platinum compounds |
| title | Coercivity and random interfacial exchange coupling in CoPt/Co films |
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