Realization of large coercivity in MnAl permanent-magnet alloys by introducing nanoprecipitates
[Display omitted] •Nanoprecipitates are formed through combining Tb dopant and rapid solidification.•The evolution of nanoprecipitates in Tb-doped MnAl ribbons are clarified.•Improved coercivity is realized due to the pinning effect of nanoparticles. Acquisition of large coercivity remains as a key...
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| Veröffentlicht in: | Journal of magnetism and magnetic materials 2019-08, Vol.483, p.164-168 |
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| container_end_page | 168 |
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| container_start_page | 164 |
| container_title | Journal of magnetism and magnetic materials |
| container_volume | 483 |
| creator | Zhao, Shuang Wu, Yuye Wang, Jingmin Jia, Yuxiao Zhang, Tianli Zhang, Tianle Jiang, Chengbao |
| description | [Display omitted]
•Nanoprecipitates are formed through combining Tb dopant and rapid solidification.•The evolution of nanoprecipitates in Tb-doped MnAl ribbons are clarified.•Improved coercivity is realized due to the pinning effect of nanoparticles.
Acquisition of large coercivity remains as a key issue in MnAl permanent-magnet alloys. In this work, we successfully introduce rhombohedral nanoprecipitates with the size of ∼20 nm into L10 MnAl alloys via doping 0.2 at.% Tb and melt spinning technology. The motion of magnetic domain walls can be more effectively pinned by the dispersive nanoprecipitates. This results in an improved coercivity of 5.43 kOe in Tb-0.2 at.% powders which is 22% larger than that of the binary powder without significant degrading in saturation magnetization and magnetocrystalline anisotropy. This work may provide a new method to improve the coercivity in MnAl permanent magnets. |
| doi_str_mv | 10.1016/j.jmmm.2019.03.103 |
| format | Article |
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•Nanoprecipitates are formed through combining Tb dopant and rapid solidification.•The evolution of nanoprecipitates in Tb-doped MnAl ribbons are clarified.•Improved coercivity is realized due to the pinning effect of nanoparticles.
Acquisition of large coercivity remains as a key issue in MnAl permanent-magnet alloys. In this work, we successfully introduce rhombohedral nanoprecipitates with the size of ∼20 nm into L10 MnAl alloys via doping 0.2 at.% Tb and melt spinning technology. The motion of magnetic domain walls can be more effectively pinned by the dispersive nanoprecipitates. This results in an improved coercivity of 5.43 kOe in Tb-0.2 at.% powders which is 22% larger than that of the binary powder without significant degrading in saturation magnetization and magnetocrystalline anisotropy. This work may provide a new method to improve the coercivity in MnAl permanent magnets.</description><identifier>ISSN: 0304-8853</identifier><identifier>EISSN: 1873-4766</identifier><identifier>DOI: 10.1016/j.jmmm.2019.03.103</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Anisotropy ; Coercivity ; Domain walls ; Magnetic domains ; Magnetic saturation ; Magnetism ; Melt spinning ; MnAl permanent-magnet alloys ; Nanoprecipitates ; Permanent magnets ; Surfactant-assistant high energy ball milling</subject><ispartof>Journal of magnetism and magnetic materials, 2019-08, Vol.483, p.164-168</ispartof><rights>2019 Elsevier B.V.</rights><rights>Copyright Elsevier BV Aug 1, 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c394t-9f74282d2db83c355fc10184d2a40204d6663d1f3662e3e66d24df028a1198ea3</citedby><cites>FETCH-LOGICAL-c394t-9f74282d2db83c355fc10184d2a40204d6663d1f3662e3e66d24df028a1198ea3</cites><orcidid>0000-0001-9766-592X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jmmm.2019.03.103$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Zhao, Shuang</creatorcontrib><creatorcontrib>Wu, Yuye</creatorcontrib><creatorcontrib>Wang, Jingmin</creatorcontrib><creatorcontrib>Jia, Yuxiao</creatorcontrib><creatorcontrib>Zhang, Tianli</creatorcontrib><creatorcontrib>Zhang, Tianle</creatorcontrib><creatorcontrib>Jiang, Chengbao</creatorcontrib><title>Realization of large coercivity in MnAl permanent-magnet alloys by introducing nanoprecipitates</title><title>Journal of magnetism and magnetic materials</title><description>[Display omitted]
•Nanoprecipitates are formed through combining Tb dopant and rapid solidification.•The evolution of nanoprecipitates in Tb-doped MnAl ribbons are clarified.•Improved coercivity is realized due to the pinning effect of nanoparticles.
Acquisition of large coercivity remains as a key issue in MnAl permanent-magnet alloys. In this work, we successfully introduce rhombohedral nanoprecipitates with the size of ∼20 nm into L10 MnAl alloys via doping 0.2 at.% Tb and melt spinning technology. The motion of magnetic domain walls can be more effectively pinned by the dispersive nanoprecipitates. This results in an improved coercivity of 5.43 kOe in Tb-0.2 at.% powders which is 22% larger than that of the binary powder without significant degrading in saturation magnetization and magnetocrystalline anisotropy. This work may provide a new method to improve the coercivity in MnAl permanent magnets.</description><subject>Anisotropy</subject><subject>Coercivity</subject><subject>Domain walls</subject><subject>Magnetic domains</subject><subject>Magnetic saturation</subject><subject>Magnetism</subject><subject>Melt spinning</subject><subject>MnAl permanent-magnet alloys</subject><subject>Nanoprecipitates</subject><subject>Permanent magnets</subject><subject>Surfactant-assistant high energy ball milling</subject><issn>0304-8853</issn><issn>1873-4766</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLxDAUhYMoOI7-AVcB1615NZMBNyK-QBFE1yEmt0NKm9QkMzD-elvGtasLh-_ce89B6JKSmhIqr7u6G4ahZoSua8InjR-hBVUrXomVlMdoQTgRlVINP0VnOXeEECqUXCD9Dqb3P6b4GHBscW_SBrCNkKzf-bLHPuDXcNvjEdJgAoRSDWYToGDT93Gf8deMlBTd1vqwwcGEOCawfvTFFMjn6KQ1fYaLv7lEnw_3H3dP1cvb4_Pd7Utl-VqUat2uBFPMMfeluOVN09oplxKOGUEYEU5KyR1tuZQMOEjpmHAtYcpQulZg-BJdHfaOKX5vIRfdxW0K00nNmBS0UY3kE8UOlE0x5wStHpMfTNprSvRcpO70XKSei9SET9psujmYYPp_5yHpbD0EC85PQYt20f9n_wWXNHzt</recordid><startdate>20190801</startdate><enddate>20190801</enddate><creator>Zhao, Shuang</creator><creator>Wu, Yuye</creator><creator>Wang, Jingmin</creator><creator>Jia, Yuxiao</creator><creator>Zhang, Tianli</creator><creator>Zhang, Tianle</creator><creator>Jiang, Chengbao</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0001-9766-592X</orcidid></search><sort><creationdate>20190801</creationdate><title>Realization of large coercivity in MnAl permanent-magnet alloys by introducing nanoprecipitates</title><author>Zhao, Shuang ; Wu, Yuye ; Wang, Jingmin ; Jia, Yuxiao ; Zhang, Tianli ; Zhang, Tianle ; Jiang, Chengbao</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c394t-9f74282d2db83c355fc10184d2a40204d6663d1f3662e3e66d24df028a1198ea3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Anisotropy</topic><topic>Coercivity</topic><topic>Domain walls</topic><topic>Magnetic domains</topic><topic>Magnetic saturation</topic><topic>Magnetism</topic><topic>Melt spinning</topic><topic>MnAl permanent-magnet alloys</topic><topic>Nanoprecipitates</topic><topic>Permanent magnets</topic><topic>Surfactant-assistant high energy ball milling</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhao, Shuang</creatorcontrib><creatorcontrib>Wu, Yuye</creatorcontrib><creatorcontrib>Wang, Jingmin</creatorcontrib><creatorcontrib>Jia, Yuxiao</creatorcontrib><creatorcontrib>Zhang, Tianli</creatorcontrib><creatorcontrib>Zhang, Tianle</creatorcontrib><creatorcontrib>Jiang, Chengbao</creatorcontrib><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>Zhao, Shuang</au><au>Wu, Yuye</au><au>Wang, Jingmin</au><au>Jia, Yuxiao</au><au>Zhang, Tianli</au><au>Zhang, Tianle</au><au>Jiang, Chengbao</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Realization of large coercivity in MnAl permanent-magnet alloys by introducing nanoprecipitates</atitle><jtitle>Journal of magnetism and magnetic materials</jtitle><date>2019-08-01</date><risdate>2019</risdate><volume>483</volume><spage>164</spage><epage>168</epage><pages>164-168</pages><issn>0304-8853</issn><eissn>1873-4766</eissn><abstract>[Display omitted]
•Nanoprecipitates are formed through combining Tb dopant and rapid solidification.•The evolution of nanoprecipitates in Tb-doped MnAl ribbons are clarified.•Improved coercivity is realized due to the pinning effect of nanoparticles.
Acquisition of large coercivity remains as a key issue in MnAl permanent-magnet alloys. In this work, we successfully introduce rhombohedral nanoprecipitates with the size of ∼20 nm into L10 MnAl alloys via doping 0.2 at.% Tb and melt spinning technology. The motion of magnetic domain walls can be more effectively pinned by the dispersive nanoprecipitates. This results in an improved coercivity of 5.43 kOe in Tb-0.2 at.% powders which is 22% larger than that of the binary powder without significant degrading in saturation magnetization and magnetocrystalline anisotropy. This work may provide a new method to improve the coercivity in MnAl permanent magnets.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jmmm.2019.03.103</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0001-9766-592X</orcidid></addata></record> |
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| language | eng |
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| subjects | Anisotropy Coercivity Domain walls Magnetic domains Magnetic saturation Magnetism Melt spinning MnAl permanent-magnet alloys Nanoprecipitates Permanent magnets Surfactant-assistant high energy ball milling |
| title | Realization of large coercivity in MnAl permanent-magnet alloys by introducing nanoprecipitates |
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