Investigation of the magnetism and magnetocaloric effect in the R2CoAl3 (R = Gd, Tb, Dy, and Ho) compounds
The crystal structure, magnetic properties and magnetocaloric effect (MCE) of R2CoAl3 (R = Gd, Tb, Dy, and Ho) compounds have been investigated. The refinement results proved that the samples are crystallized in MgCu2-type structure with space group of Fd-3m. The R2CoAl3 compounds undergo a paramagn...
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| Veröffentlicht in: | Journal of alloys and compounds 2017-08, Vol.715, p.242-246 |
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| creator | Meng, Lingjian Jia, Youshun Qi, Yang Wang, Qiang Li, Lingwei |
| description | The crystal structure, magnetic properties and magnetocaloric effect (MCE) of R2CoAl3 (R = Gd, Tb, Dy, and Ho) compounds have been investigated. The refinement results proved that the samples are crystallized in MgCu2-type structure with space group of Fd-3m. The R2CoAl3 compounds undergo a paramagnetic to ferromagnetic phase transition (second ordered) and exhibit considerable reversible MCE around Curie temperatures TC of 70 K, 47 K, 33 K, and 20 K for R = Gd, Tb, Dy, and Ho, respectively. For the magnetic field change of 0–7 T, the maximum values of magnetic entropy change (−ΔSMmax) are 16.2, 10.6, 9.4, 16.5 J/kg K for R = Gd, Tb, Dy, and Ho, respectively. The considerable MCE with no hysteresis and wide working temperature span suggests that these materials could be promising candidates for magnetic refrigeration.
•The R2CoAl3 (R = Gd, Tb, Dy, and Ho) compounds were synthesized.•Structure, magnetism and magnetocaloric effect (MCE) were studied.•A considerable reversible MCE was observed.•The origin of MCE and its potential application in R2CoAl3 were discussed. |
| doi_str_mv | 10.1016/j.jallcom.2017.04.321 |
| format | Article |
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•The R2CoAl3 (R = Gd, Tb, Dy, and Ho) compounds were synthesized.•Structure, magnetism and magnetocaloric effect (MCE) were studied.•A considerable reversible MCE was observed.•The origin of MCE and its potential application in R2CoAl3 were discussed.</description><identifier>ISSN: 0925-8388</identifier><identifier>EISSN: 1873-4669</identifier><identifier>DOI: 10.1016/j.jallcom.2017.04.321</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Crystal structure ; Crystallization ; Ferromagnetic phases ; Ferromagnetism ; Intermetallic compounds ; Magnetic fields ; Magnetic phase transition ; Magnetic properties ; Magnetic refrigeration ; Magnetism ; Magnetocaloric effect ; Phase transitions ; R2CoAl3 compounds ; Refrigeration</subject><ispartof>Journal of alloys and compounds, 2017-08, Vol.715, p.242-246</ispartof><rights>2017 Elsevier B.V.</rights><rights>Copyright Elsevier BV Aug 25, 2017</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c337t-5aebc531ae8d85fe262e86df0525b3687abcb43106fe07ed0e92f96e67ab1ba03</citedby><cites>FETCH-LOGICAL-c337t-5aebc531ae8d85fe262e86df0525b3687abcb43106fe07ed0e92f96e67ab1ba03</cites><orcidid>0000-0002-3559-2128</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jallcom.2017.04.321$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Meng, Lingjian</creatorcontrib><creatorcontrib>Jia, Youshun</creatorcontrib><creatorcontrib>Qi, Yang</creatorcontrib><creatorcontrib>Wang, Qiang</creatorcontrib><creatorcontrib>Li, Lingwei</creatorcontrib><title>Investigation of the magnetism and magnetocaloric effect in the R2CoAl3 (R = Gd, Tb, Dy, and Ho) compounds</title><title>Journal of alloys and compounds</title><description>The crystal structure, magnetic properties and magnetocaloric effect (MCE) of R2CoAl3 (R = Gd, Tb, Dy, and Ho) compounds have been investigated. The refinement results proved that the samples are crystallized in MgCu2-type structure with space group of Fd-3m. The R2CoAl3 compounds undergo a paramagnetic to ferromagnetic phase transition (second ordered) and exhibit considerable reversible MCE around Curie temperatures TC of 70 K, 47 K, 33 K, and 20 K for R = Gd, Tb, Dy, and Ho, respectively. For the magnetic field change of 0–7 T, the maximum values of magnetic entropy change (−ΔSMmax) are 16.2, 10.6, 9.4, 16.5 J/kg K for R = Gd, Tb, Dy, and Ho, respectively. The considerable MCE with no hysteresis and wide working temperature span suggests that these materials could be promising candidates for magnetic refrigeration.
•The R2CoAl3 (R = Gd, Tb, Dy, and Ho) compounds were synthesized.•Structure, magnetism and magnetocaloric effect (MCE) were studied.•A considerable reversible MCE was observed.•The origin of MCE and its potential application in R2CoAl3 were discussed.</description><subject>Crystal structure</subject><subject>Crystallization</subject><subject>Ferromagnetic phases</subject><subject>Ferromagnetism</subject><subject>Intermetallic compounds</subject><subject>Magnetic fields</subject><subject>Magnetic phase transition</subject><subject>Magnetic properties</subject><subject>Magnetic refrigeration</subject><subject>Magnetism</subject><subject>Magnetocaloric effect</subject><subject>Phase transitions</subject><subject>R2CoAl3 compounds</subject><subject>Refrigeration</subject><issn>0925-8388</issn><issn>1873-4669</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNqFkN1KAzEQhYMoWH8eQQh4o9Bdk02TzV6ISP0FQSj1OmSzk5plu6nJVvBtfBafzNT23qthmHNm5nwInVGSU0LFVZu3uuuMX-YFoWVOJjkr6B4aUVmybCJEtY9GpCp4JpmUh-goxpYQQitGR6h77j8hDm6hB-d77C0e3gEv9aKHwcUl1n2z67zRnQ_OYLAWzIBd_yedFVN_2zF8Mfv5vv75fmzGeF6P8d3X-M_75C9x-mzl130TT9CB1V2E0109Rm8P9_PpU_by-vg8vX3JDGPlkHENteGMapCN5BYKUYAUjSW84DUTstS1qSeMEmGBlNAQqApbCRBpQGtN2DE63-5dBf-xTvFU69ehTydVSi04lZTxpOJblQk-xgBWrYJb6vClKFEbsKpVO7BqA1aRiUpgk-9m64MU4dNBUNE46A00LiQwqvHunw2_3k6EfQ</recordid><startdate>20170825</startdate><enddate>20170825</enddate><creator>Meng, Lingjian</creator><creator>Jia, Youshun</creator><creator>Qi, Yang</creator><creator>Wang, Qiang</creator><creator>Li, Lingwei</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0002-3559-2128</orcidid></search><sort><creationdate>20170825</creationdate><title>Investigation of the magnetism and magnetocaloric effect in the R2CoAl3 (R = Gd, Tb, Dy, and Ho) compounds</title><author>Meng, Lingjian ; Jia, Youshun ; Qi, Yang ; Wang, Qiang ; Li, Lingwei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c337t-5aebc531ae8d85fe262e86df0525b3687abcb43106fe07ed0e92f96e67ab1ba03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Crystal structure</topic><topic>Crystallization</topic><topic>Ferromagnetic phases</topic><topic>Ferromagnetism</topic><topic>Intermetallic compounds</topic><topic>Magnetic fields</topic><topic>Magnetic phase transition</topic><topic>Magnetic properties</topic><topic>Magnetic refrigeration</topic><topic>Magnetism</topic><topic>Magnetocaloric effect</topic><topic>Phase transitions</topic><topic>R2CoAl3 compounds</topic><topic>Refrigeration</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Meng, Lingjian</creatorcontrib><creatorcontrib>Jia, Youshun</creatorcontrib><creatorcontrib>Qi, Yang</creatorcontrib><creatorcontrib>Wang, Qiang</creatorcontrib><creatorcontrib>Li, Lingwei</creatorcontrib><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>Meng, Lingjian</au><au>Jia, Youshun</au><au>Qi, Yang</au><au>Wang, Qiang</au><au>Li, Lingwei</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Investigation of the magnetism and magnetocaloric effect in the R2CoAl3 (R = Gd, Tb, Dy, and Ho) compounds</atitle><jtitle>Journal of alloys and compounds</jtitle><date>2017-08-25</date><risdate>2017</risdate><volume>715</volume><spage>242</spage><epage>246</epage><pages>242-246</pages><issn>0925-8388</issn><eissn>1873-4669</eissn><abstract>The crystal structure, magnetic properties and magnetocaloric effect (MCE) of R2CoAl3 (R = Gd, Tb, Dy, and Ho) compounds have been investigated. The refinement results proved that the samples are crystallized in MgCu2-type structure with space group of Fd-3m. The R2CoAl3 compounds undergo a paramagnetic to ferromagnetic phase transition (second ordered) and exhibit considerable reversible MCE around Curie temperatures TC of 70 K, 47 K, 33 K, and 20 K for R = Gd, Tb, Dy, and Ho, respectively. For the magnetic field change of 0–7 T, the maximum values of magnetic entropy change (−ΔSMmax) are 16.2, 10.6, 9.4, 16.5 J/kg K for R = Gd, Tb, Dy, and Ho, respectively. The considerable MCE with no hysteresis and wide working temperature span suggests that these materials could be promising candidates for magnetic refrigeration.
•The R2CoAl3 (R = Gd, Tb, Dy, and Ho) compounds were synthesized.•Structure, magnetism and magnetocaloric effect (MCE) were studied.•A considerable reversible MCE was observed.•The origin of MCE and its potential application in R2CoAl3 were discussed.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jallcom.2017.04.321</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0002-3559-2128</orcidid></addata></record> |
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| subjects | Crystal structure Crystallization Ferromagnetic phases Ferromagnetism Intermetallic compounds Magnetic fields Magnetic phase transition Magnetic properties Magnetic refrigeration Magnetism Magnetocaloric effect Phase transitions R2CoAl3 compounds Refrigeration |
| title | Investigation of the magnetism and magnetocaloric effect in the R2CoAl3 (R = Gd, Tb, Dy, and Ho) compounds |
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