Modification of exchange bias by cooling field without changing the ferromagnetic magnetization
In this work, cooling fields (HFC) with different signs or magnitudes were applied on ferromagnetic (FM)/antiferromagnetic (AF) films [Pt(10Å)/Co(4Å)]4/NiO(tNiOÅ) when FM magnetization of Pt/Co multilayers was kept in positive saturation state at room temperature. Compared to results at HFC=+5kOe, i...
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| Veröffentlicht in: | Journal of magnetism and magnetic materials 2013-04, Vol.332, p.71-75 |
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| container_title | Journal of magnetism and magnetic materials |
| container_volume | 332 |
| creator | Li, Bo Liu, W. Zhao, X.G. Guo, S. Gong, W.J. Feng, J.N. Yu, T. Zhang, Z.D. |
| description | In this work, cooling fields (HFC) with different signs or magnitudes were applied on ferromagnetic (FM)/antiferromagnetic (AF) films [Pt(10Å)/Co(4Å)]4/NiO(tNiOÅ) when FM magnetization of Pt/Co multilayers was kept in positive saturation state at room temperature. Compared to results at HFC=+5kOe, it is seen that HFC=−1kOe suppressed the exchange bias field (HE) and enhanced the coercivity (HC) at the same time. The phenomenon indicates that AF spins can be modified by cooling field without changing the FM magnetization. The experimental results are understood by the competition between the FM/AF interfacial exchange coupling and Zeeman energy in FM/AF systems with ferromagnetic interfacial coupling.
► Antiferromagnetic (AF) spin configuration is modified only by cooling field. ► Both suppressed exchange bias field (HE) and enhanced coercivity (HC) are achieved at the same time when HFC varies. ► Different cooling fields induce distinct initial non-equilibrium states of AF layer. ► AF domain walls serve as new pinning sites of FM domain walls, leading to the enhancement of HC. |
| doi_str_mv | 10.1016/j.jmmm.2012.11.054 |
| format | Article |
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► Antiferromagnetic (AF) spin configuration is modified only by cooling field. ► Both suppressed exchange bias field (HE) and enhanced coercivity (HC) are achieved at the same time when HFC varies. ► Different cooling fields induce distinct initial non-equilibrium states of AF layer. ► AF domain walls serve as new pinning sites of FM domain walls, leading to the enhancement of HC.</description><identifier>ISSN: 0304-8853</identifier><identifier>DOI: 10.1016/j.jmmm.2012.11.054</identifier><identifier>CODEN: JMMMDC</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Bias ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Cooling ; Cooling field ; Exact sciences and technology ; Exchange bias ; Ferromagnetic materials ; Ferromagnetism ; Interfacial exchange coupling ; Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures) ; Joining ; Magnetic properties and materials ; Magnetic properties of surface, thin films and multilayers ; Magnetization ; Multilayers ; Physics ; Saturation ; Zeeman energy</subject><ispartof>Journal of magnetism and magnetic materials, 2013-04, Vol.332, p.71-75</ispartof><rights>2012 Elsevier B.V.</rights><rights>2014 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c363t-14ef28063711097150b0dd9c8dea8983f893311dc92b15911f798e2ba5502b0a3</citedby><cites>FETCH-LOGICAL-c363t-14ef28063711097150b0dd9c8dea8983f893311dc92b15911f798e2ba5502b0a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jmmm.2012.11.054$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>315,781,785,3551,27926,27927,45997</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26924739$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Li, Bo</creatorcontrib><creatorcontrib>Liu, W.</creatorcontrib><creatorcontrib>Zhao, X.G.</creatorcontrib><creatorcontrib>Guo, S.</creatorcontrib><creatorcontrib>Gong, W.J.</creatorcontrib><creatorcontrib>Feng, J.N.</creatorcontrib><creatorcontrib>Yu, T.</creatorcontrib><creatorcontrib>Zhang, Z.D.</creatorcontrib><title>Modification of exchange bias by cooling field without changing the ferromagnetic magnetization</title><title>Journal of magnetism and magnetic materials</title><description>In this work, cooling fields (HFC) with different signs or magnitudes were applied on ferromagnetic (FM)/antiferromagnetic (AF) films [Pt(10Å)/Co(4Å)]4/NiO(tNiOÅ) when FM magnetization of Pt/Co multilayers was kept in positive saturation state at room temperature. Compared to results at HFC=+5kOe, it is seen that HFC=−1kOe suppressed the exchange bias field (HE) and enhanced the coercivity (HC) at the same time. The phenomenon indicates that AF spins can be modified by cooling field without changing the FM magnetization. The experimental results are understood by the competition between the FM/AF interfacial exchange coupling and Zeeman energy in FM/AF systems with ferromagnetic interfacial coupling.
► Antiferromagnetic (AF) spin configuration is modified only by cooling field. ► Both suppressed exchange bias field (HE) and enhanced coercivity (HC) are achieved at the same time when HFC varies. ► Different cooling fields induce distinct initial non-equilibrium states of AF layer. ► AF domain walls serve as new pinning sites of FM domain walls, leading to the enhancement of HC.</description><subject>Bias</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Cooling</subject><subject>Cooling field</subject><subject>Exact sciences and technology</subject><subject>Exchange bias</subject><subject>Ferromagnetic materials</subject><subject>Ferromagnetism</subject><subject>Interfacial exchange coupling</subject><subject>Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures)</subject><subject>Joining</subject><subject>Magnetic properties and materials</subject><subject>Magnetic properties of surface, thin films and multilayers</subject><subject>Magnetization</subject><subject>Multilayers</subject><subject>Physics</subject><subject>Saturation</subject><subject>Zeeman energy</subject><issn>0304-8853</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNp9kD1PwzAQhjOARPn4A0xekFgafHY-bIkFVXxJRSwwW45zbl0lcbFToPx6krZiZLrT6bnndG-SXAJNgUJxs0pXbdumjAJLAVKaZ0fJhHKaTYXI-UlyGuOKUgqZKCaJevG1s87o3vmOeEvw2yx1t0BSOR1JtSXG-8Z1C2IdNjX5cv3Sb3qyg8Zxv0RiMQTf6kWHvTPk0PzslOfJsdVNxItDPUveH-7fZk_T-evj8-xuPjW84P0UMrRM0IKXAFSWkNOK1rU0okYtpOBWSM4BaiNZBbkEsKUUyCqd55RVVPOz5HrvXQf_scHYq9ZFg02jO_SbqKAYpWUh-ICyPWqCjzGgVevgWh22CqgaE1QrNSaoxgQVgBoSHJauDn4djW5s0J1x8W-TFZJlJZcDd7vncHj202FQ0TjsDNYuoOlV7d1_Z34BJI6JaQ</recordid><startdate>20130401</startdate><enddate>20130401</enddate><creator>Li, Bo</creator><creator>Liu, W.</creator><creator>Zhao, X.G.</creator><creator>Guo, S.</creator><creator>Gong, W.J.</creator><creator>Feng, J.N.</creator><creator>Yu, T.</creator><creator>Zhang, Z.D.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20130401</creationdate><title>Modification of exchange bias by cooling field without changing the ferromagnetic magnetization</title><author>Li, Bo ; Liu, W. ; Zhao, X.G. ; Guo, S. ; Gong, W.J. ; Feng, J.N. ; Yu, T. ; Zhang, Z.D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c363t-14ef28063711097150b0dd9c8dea8983f893311dc92b15911f798e2ba5502b0a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Bias</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Cooling</topic><topic>Cooling field</topic><topic>Exact sciences and technology</topic><topic>Exchange bias</topic><topic>Ferromagnetic materials</topic><topic>Ferromagnetism</topic><topic>Interfacial exchange coupling</topic><topic>Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures)</topic><topic>Joining</topic><topic>Magnetic properties and materials</topic><topic>Magnetic properties of surface, thin films and multilayers</topic><topic>Magnetization</topic><topic>Multilayers</topic><topic>Physics</topic><topic>Saturation</topic><topic>Zeeman energy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Bo</creatorcontrib><creatorcontrib>Liu, W.</creatorcontrib><creatorcontrib>Zhao, X.G.</creatorcontrib><creatorcontrib>Guo, S.</creatorcontrib><creatorcontrib>Gong, W.J.</creatorcontrib><creatorcontrib>Feng, J.N.</creatorcontrib><creatorcontrib>Yu, T.</creatorcontrib><creatorcontrib>Zhang, Z.D.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials 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>Journal of magnetism and magnetic materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Li, Bo</au><au>Liu, W.</au><au>Zhao, X.G.</au><au>Guo, S.</au><au>Gong, W.J.</au><au>Feng, J.N.</au><au>Yu, T.</au><au>Zhang, Z.D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Modification of exchange bias by cooling field without changing the ferromagnetic magnetization</atitle><jtitle>Journal of magnetism and magnetic materials</jtitle><date>2013-04-01</date><risdate>2013</risdate><volume>332</volume><spage>71</spage><epage>75</epage><pages>71-75</pages><issn>0304-8853</issn><coden>JMMMDC</coden><abstract>In this work, cooling fields (HFC) with different signs or magnitudes were applied on ferromagnetic (FM)/antiferromagnetic (AF) films [Pt(10Å)/Co(4Å)]4/NiO(tNiOÅ) when FM magnetization of Pt/Co multilayers was kept in positive saturation state at room temperature. Compared to results at HFC=+5kOe, it is seen that HFC=−1kOe suppressed the exchange bias field (HE) and enhanced the coercivity (HC) at the same time. The phenomenon indicates that AF spins can be modified by cooling field without changing the FM magnetization. The experimental results are understood by the competition between the FM/AF interfacial exchange coupling and Zeeman energy in FM/AF systems with ferromagnetic interfacial coupling.
► Antiferromagnetic (AF) spin configuration is modified only by cooling field. ► Both suppressed exchange bias field (HE) and enhanced coercivity (HC) are achieved at the same time when HFC varies. ► Different cooling fields induce distinct initial non-equilibrium states of AF layer. ► AF domain walls serve as new pinning sites of FM domain walls, leading to the enhancement of HC.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jmmm.2012.11.054</doi><tpages>5</tpages></addata></record> |
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| subjects | Bias Condensed matter: electronic structure, electrical, magnetic, and optical properties Cooling Cooling field Exact sciences and technology Exchange bias Ferromagnetic materials Ferromagnetism Interfacial exchange coupling Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures) Joining Magnetic properties and materials Magnetic properties of surface, thin films and multilayers Magnetization Multilayers Physics Saturation Zeeman energy |
| title | Modification of exchange bias by cooling field without changing the ferromagnetic magnetization |
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