One-step hydrothermal synthesis and characterization of high magnetization CoFe2O4/Co0.7Fe0.3 nanocomposite permanent magnets
► One-step hydrothermal synthesis of CoFe2O4/Co0.7Fe0.3 nanocomposite. ► The maximum magnetic parameters are observed in CoFe2O4/Co0.7Fe0.3 system. ► Magnetic dipolar interaction affects magnetic property of CoFe2O4/Co0.7Fe0.3. CoFe2O4/Co0.7Fe0.3 nanocomposite permanent magnets have been synthesized...
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| Veröffentlicht in: | Journal of alloys and compounds 2013-03, Vol.553, p.79-85 |
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| creator | Zan, F.L. Ma, Y.Q. Ma, Q. Zheng, G.H. Dai, Z.X. Wu, M.Z. Li, G. Sun, Z.Q. Chen, X.S. |
| description | ► One-step hydrothermal synthesis of CoFe2O4/Co0.7Fe0.3 nanocomposite. ► The maximum magnetic parameters are observed in CoFe2O4/Co0.7Fe0.3 system. ► Magnetic dipolar interaction affects magnetic property of CoFe2O4/Co0.7Fe0.3.
CoFe2O4/Co0.7Fe0.3 nanocomposite permanent magnets have been synthesized in one step by a hydrothermal method at reaction temperatures of 80, 120, 140, 160 and 180°C and characterized by XRD, SQUID, SEM, (HR)TEM, and SAED. All samples consisted of octahedral CoFe2O4 particles and spherical-like Co0.7Fe0.3 particles. The maximum magnetization and coercivity were 191emu/g and 1311Oe, respectively, values not previously observed for the CoFe2O4/Co0.7Fe0.3 system. This maximum magnetization was attributable to the larger mass ratio of Co0.7Fe0.3 to CoFe2O4, which were in intimate contact. Magnetic dipolar interaction plays a crucial role in magnetic properties and leads to the reduction of the magnetization and the Mr/Ms ratio. The coercivity of all samples exhibited complex variation with reaction temperature and its mechanism may deserve further investigation. |
| doi_str_mv | 10.1016/j.jallcom.2012.11.120 |
| format | Article |
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CoFe2O4/Co0.7Fe0.3 nanocomposite permanent magnets have been synthesized in one step by a hydrothermal method at reaction temperatures of 80, 120, 140, 160 and 180°C and characterized by XRD, SQUID, SEM, (HR)TEM, and SAED. All samples consisted of octahedral CoFe2O4 particles and spherical-like Co0.7Fe0.3 particles. The maximum magnetization and coercivity were 191emu/g and 1311Oe, respectively, values not previously observed for the CoFe2O4/Co0.7Fe0.3 system. This maximum magnetization was attributable to the larger mass ratio of Co0.7Fe0.3 to CoFe2O4, which were in intimate contact. Magnetic dipolar interaction plays a crucial role in magnetic properties and leads to the reduction of the magnetization and the Mr/Ms ratio. The coercivity of all samples exhibited complex variation with reaction temperature and its mechanism may deserve further investigation.</description><identifier>ISSN: 0925-8388</identifier><identifier>EISSN: 1873-4669</identifier><identifier>DOI: 10.1016/j.jallcom.2012.11.120</identifier><language>eng</language><publisher>Kidlington: Elsevier B.V</publisher><subject>Co0.7Fe0.3 alloy ; Coercive force ; Coercivity ; CoFe2O4 ferrite ; Composite permanent magnet ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Domain effects, magnetization curves, and hysteresis ; Exact sciences and technology ; Magnetic dipolar interaction ; Magnetic properties ; Magnetic properties and materials ; Magnetization ; Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects ; Nanocomposites ; Nanomaterials ; Nanostructure ; Permanent magnets ; Physics ; Studies of specific magnetic materials</subject><ispartof>Journal of alloys and compounds, 2013-03, Vol.553, p.79-85</ispartof><rights>2012 Elsevier B.V.</rights><rights>2014 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c372t-4e2cce4f63f459f1f007856e831cdc6ceb7ee9663be288aa3b751412ce6b0b433</citedby><cites>FETCH-LOGICAL-c372t-4e2cce4f63f459f1f007856e831cdc6ceb7ee9663be288aa3b751412ce6b0b433</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0925838812021044$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=27113666$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Zan, F.L.</creatorcontrib><creatorcontrib>Ma, Y.Q.</creatorcontrib><creatorcontrib>Ma, Q.</creatorcontrib><creatorcontrib>Zheng, G.H.</creatorcontrib><creatorcontrib>Dai, Z.X.</creatorcontrib><creatorcontrib>Wu, M.Z.</creatorcontrib><creatorcontrib>Li, G.</creatorcontrib><creatorcontrib>Sun, Z.Q.</creatorcontrib><creatorcontrib>Chen, X.S.</creatorcontrib><title>One-step hydrothermal synthesis and characterization of high magnetization CoFe2O4/Co0.7Fe0.3 nanocomposite permanent magnets</title><title>Journal of alloys and compounds</title><description>► One-step hydrothermal synthesis of CoFe2O4/Co0.7Fe0.3 nanocomposite. ► The maximum magnetic parameters are observed in CoFe2O4/Co0.7Fe0.3 system. ► Magnetic dipolar interaction affects magnetic property of CoFe2O4/Co0.7Fe0.3.
CoFe2O4/Co0.7Fe0.3 nanocomposite permanent magnets have been synthesized in one step by a hydrothermal method at reaction temperatures of 80, 120, 140, 160 and 180°C and characterized by XRD, SQUID, SEM, (HR)TEM, and SAED. All samples consisted of octahedral CoFe2O4 particles and spherical-like Co0.7Fe0.3 particles. The maximum magnetization and coercivity were 191emu/g and 1311Oe, respectively, values not previously observed for the CoFe2O4/Co0.7Fe0.3 system. This maximum magnetization was attributable to the larger mass ratio of Co0.7Fe0.3 to CoFe2O4, which were in intimate contact. Magnetic dipolar interaction plays a crucial role in magnetic properties and leads to the reduction of the magnetization and the Mr/Ms ratio. The coercivity of all samples exhibited complex variation with reaction temperature and its mechanism may deserve further investigation.</description><subject>Co0.7Fe0.3 alloy</subject><subject>Coercive force</subject><subject>Coercivity</subject><subject>CoFe2O4 ferrite</subject><subject>Composite permanent magnet</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Domain effects, magnetization curves, and hysteresis</subject><subject>Exact sciences and technology</subject><subject>Magnetic dipolar interaction</subject><subject>Magnetic properties</subject><subject>Magnetic properties and materials</subject><subject>Magnetization</subject><subject>Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects</subject><subject>Nanocomposites</subject><subject>Nanomaterials</subject><subject>Nanostructure</subject><subject>Permanent magnets</subject><subject>Physics</subject><subject>Studies of specific magnetic materials</subject><issn>0925-8388</issn><issn>1873-4669</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqFUE2L2zAQFaULTbP7ExZ0KfRir0ayZftUSmjahYVc2rOQ5fFawZZcSVtIof-9Ckn32tMMw_uaR8g9sBIYyIdjedTzbPxScga8BCiBszdkA20jikrK7i3ZsI7XRSva9h15H-ORMQadgA35c3BYxIQrnU5D8GnCsOiZxpPLa7SRajdQM-mgTcJgf-tkvaN-pJN9nuiinx2mf9ed3yM_VA87z8pmj6wU1Gnnc7DVR5uQrmdxhy5difGW3Ix6jnh3nVvyY__l--5b8XT4-rj7_FQY0fBUVMiNwWqUYqzqboSRsaatJbYCzGCkwb5B7KQUPfK21Vr0TQ0VcIOyZ30lxJZ8vOiuwf98wZjUYqPBec5p_EtUIGQN0ElRZ2h9gZrgYww4qjXYRYeTAqbOdaujutatznUrAJXrzrwPVwsdjZ7HoJ2x8ZXMG8gmOeKWfLrgMP_7y2JQ0Vh0Bgcb0CQ1ePsfp79flZpM</recordid><startdate>20130315</startdate><enddate>20130315</enddate><creator>Zan, F.L.</creator><creator>Ma, Y.Q.</creator><creator>Ma, Q.</creator><creator>Zheng, G.H.</creator><creator>Dai, Z.X.</creator><creator>Wu, M.Z.</creator><creator>Li, G.</creator><creator>Sun, Z.Q.</creator><creator>Chen, X.S.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20130315</creationdate><title>One-step hydrothermal synthesis and characterization of high magnetization CoFe2O4/Co0.7Fe0.3 nanocomposite permanent magnets</title><author>Zan, F.L. ; Ma, Y.Q. ; Ma, Q. ; Zheng, G.H. ; Dai, Z.X. ; Wu, M.Z. ; Li, G. ; Sun, Z.Q. ; Chen, X.S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c372t-4e2cce4f63f459f1f007856e831cdc6ceb7ee9663be288aa3b751412ce6b0b433</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Co0.7Fe0.3 alloy</topic><topic>Coercive force</topic><topic>Coercivity</topic><topic>CoFe2O4 ferrite</topic><topic>Composite permanent magnet</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Domain effects, magnetization curves, and hysteresis</topic><topic>Exact sciences and technology</topic><topic>Magnetic dipolar interaction</topic><topic>Magnetic properties</topic><topic>Magnetic properties and materials</topic><topic>Magnetization</topic><topic>Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects</topic><topic>Nanocomposites</topic><topic>Nanomaterials</topic><topic>Nanostructure</topic><topic>Permanent magnets</topic><topic>Physics</topic><topic>Studies of specific magnetic materials</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zan, F.L.</creatorcontrib><creatorcontrib>Ma, Y.Q.</creatorcontrib><creatorcontrib>Ma, Q.</creatorcontrib><creatorcontrib>Zheng, G.H.</creatorcontrib><creatorcontrib>Dai, Z.X.</creatorcontrib><creatorcontrib>Wu, M.Z.</creatorcontrib><creatorcontrib>Li, G.</creatorcontrib><creatorcontrib>Sun, Z.Q.</creatorcontrib><creatorcontrib>Chen, X.S.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of alloys and compounds</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zan, F.L.</au><au>Ma, Y.Q.</au><au>Ma, Q.</au><au>Zheng, G.H.</au><au>Dai, Z.X.</au><au>Wu, M.Z.</au><au>Li, G.</au><au>Sun, Z.Q.</au><au>Chen, X.S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>One-step hydrothermal synthesis and characterization of high magnetization CoFe2O4/Co0.7Fe0.3 nanocomposite permanent magnets</atitle><jtitle>Journal of alloys and compounds</jtitle><date>2013-03-15</date><risdate>2013</risdate><volume>553</volume><spage>79</spage><epage>85</epage><pages>79-85</pages><issn>0925-8388</issn><eissn>1873-4669</eissn><abstract>► One-step hydrothermal synthesis of CoFe2O4/Co0.7Fe0.3 nanocomposite. ► The maximum magnetic parameters are observed in CoFe2O4/Co0.7Fe0.3 system. ► Magnetic dipolar interaction affects magnetic property of CoFe2O4/Co0.7Fe0.3.
CoFe2O4/Co0.7Fe0.3 nanocomposite permanent magnets have been synthesized in one step by a hydrothermal method at reaction temperatures of 80, 120, 140, 160 and 180°C and characterized by XRD, SQUID, SEM, (HR)TEM, and SAED. All samples consisted of octahedral CoFe2O4 particles and spherical-like Co0.7Fe0.3 particles. The maximum magnetization and coercivity were 191emu/g and 1311Oe, respectively, values not previously observed for the CoFe2O4/Co0.7Fe0.3 system. This maximum magnetization was attributable to the larger mass ratio of Co0.7Fe0.3 to CoFe2O4, which were in intimate contact. Magnetic dipolar interaction plays a crucial role in magnetic properties and leads to the reduction of the magnetization and the Mr/Ms ratio. The coercivity of all samples exhibited complex variation with reaction temperature and its mechanism may deserve further investigation.</abstract><cop>Kidlington</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jallcom.2012.11.120</doi><tpages>7</tpages></addata></record> |
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| subjects | Co0.7Fe0.3 alloy Coercive force Coercivity CoFe2O4 ferrite Composite permanent magnet Condensed matter: electronic structure, electrical, magnetic, and optical properties Domain effects, magnetization curves, and hysteresis Exact sciences and technology Magnetic dipolar interaction Magnetic properties Magnetic properties and materials Magnetization Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects Nanocomposites Nanomaterials Nanostructure Permanent magnets Physics Studies of specific magnetic materials |
| title | One-step hydrothermal synthesis and characterization of high magnetization CoFe2O4/Co0.7Fe0.3 nanocomposite permanent magnets |
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