Quadrupolar ordering and exotic magnetocaloric effect in RB4 (R = Dy, Ho)
The interplay of charge, spin, orbital and lattice degrees of freedom has recently received great interest due to its potential to improve the magnetocaloric effect (MCE) for the purpose of magnetic cooling applications. Here, a new mechanism for a large entropy change with low magnetic fields in ra...
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| description | The interplay of charge, spin, orbital and lattice degrees of freedom has recently received great interest due to its potential to improve the magnetocaloric effect (MCE) for the purpose of magnetic cooling applications. Here, a new mechanism for a large entropy change with low magnetic fields in rare-earth tetraborides, especially for Ho
1-
x
Dy
x
B
4
(
x
= 0.0, 0.5, and 1.0), is proposed. For
x
= 0.0, 0.5, and 1.0, the maximum entropy changes of the giant inverse MCE are found to be 22.7 J/kgK, 19.6 J/kgK, and 19.0 J/kgK with critical fields of 25 kOe, 40 kOe, and 50 kOe, respectively. For all compounds, systematic study on how the entropy changes as a function of the field and temperature is performed to investigate their correlation with consecutive double transitions, i.e., the magnetic dipolar order at
T
=
T
N
and the quadrupolar order at
T
=
T
Q
(
T
Q
|
| doi_str_mv | 10.1038/s41598-020-57621-7 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_pubme</sourceid><recordid>TN_cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_6972750</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2343503873</sourcerecordid><originalsourceid>FETCH-LOGICAL-c517t-49625846e60821baa00616bb3aa5bc0dc039f8bd1a2ee6d9c1e80687295aa4f3</originalsourceid><addsrcrecordid>eNp9kc1O3DAUhS1EVRDlBVhFYgMSaf2feAESDLRUoqoYsbdunJshKBMPdlKVHdu-Zp8EzwwqhQWWLF_rfufIvoeQPUY_MyrKL1EyZcqccpqrQnOWFxtkm1Opci443_yv3iK7Md7RtBQ3kpmPZEswo6WRepv8uB6hDuPCdxAyH2oMbT_LoK8z_O2H1mVzmPU4eAedD-mKTYNuyNo-m57J7GD69_HPcdrnD0fZpT_8RD400EXcfT53yM3Xi5vJZX7189v3yelV7hQrhlwazVUpNWpaclYBUKqZrioBoCpHa0eFacqqZsARdW0cw5LqsuBGAchG7JCTte1irOZYO-yHAJ1dhHYO4cF6aO3rTt_e2pn_ZbUpeKFoMjh4Ngj-fsQ42HkbHXYd9OjHaLmQImFlIRK6_wa982Po0-9WFOXa0CJRfE254GMM2Px7DKN2mZdd52VTXnaVl12KxFoUF8upY3ixfkf1BNkJlxA</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2343026907</pqid></control><display><type>article</type><title>Quadrupolar ordering and exotic magnetocaloric effect in RB4 (R = Dy, Ho)</title><source>Nature Free</source><source>DOAJ Directory of Open Access Journals</source><source>Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals</source><source>PubMed Central</source><source>Alma/SFX Local Collection</source><source>Free Full-Text Journals in Chemistry</source><source>Springer Nature OA Free Journals</source><creator>Song, M. S. ; Cho, K. K. ; Kang, B. Y. ; Lee, S. B. ; Cho, B. K.</creator><creatorcontrib>Song, M. S. ; Cho, K. K. ; Kang, B. Y. ; Lee, S. B. ; Cho, B. K.</creatorcontrib><description>The interplay of charge, spin, orbital and lattice degrees of freedom has recently received great interest due to its potential to improve the magnetocaloric effect (MCE) for the purpose of magnetic cooling applications. Here, a new mechanism for a large entropy change with low magnetic fields in rare-earth tetraborides, especially for Ho
1-
x
Dy
x
B
4
(
x
= 0.0, 0.5, and 1.0), is proposed. For
x
= 0.0, 0.5, and 1.0, the maximum entropy changes of the giant inverse MCE are found to be 22.7 J/kgK, 19.6 J/kgK, and 19.0 J/kgK with critical fields of 25 kOe, 40 kOe, and 50 kOe, respectively. For all compounds, systematic study on how the entropy changes as a function of the field and temperature is performed to investigate their correlation with consecutive double transitions, i.e., the magnetic dipolar order at
T
=
T
N
and the quadrupolar order at
T
=
T
Q
(
T
Q
<
T
N
). Based on Landau theory, it is found that this behaviour is attributed to the strong coupling between magnetic dipoles and quadrupoles in the presence of strong spin-orbit coupling and geometric frustration. Our work offers new insights into both academic and industrial interests in the discovery of giant MCE with various applications for magnetic cooling systems.</description><identifier>ISSN: 2045-2322</identifier><identifier>EISSN: 2045-2322</identifier><identifier>DOI: 10.1038/s41598-020-57621-7</identifier><identifier>PMID: 31964946</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>639/301/119/2795 ; 639/301/119/997 ; Cooling systems ; Entropy ; Humanities and Social Sciences ; Magnetic fields ; Magnetism ; Maximum entropy ; multidisciplinary ; Science ; Science (multidisciplinary)</subject><ispartof>Scientific reports, 2020-01, Vol.10 (1), p.803-803, Article 803</ispartof><rights>The Author(s) 2020</rights><rights>This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c517t-49625846e60821baa00616bb3aa5bc0dc039f8bd1a2ee6d9c1e80687295aa4f3</citedby><cites>FETCH-LOGICAL-c517t-49625846e60821baa00616bb3aa5bc0dc039f8bd1a2ee6d9c1e80687295aa4f3</cites><orcidid>0000-0001-7060-4158 ; 0000-0003-3650-3614</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6972750/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6972750/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,860,881,27901,27902,41096,42165,51551,53766,53768</link.rule.ids></links><search><creatorcontrib>Song, M. S.</creatorcontrib><creatorcontrib>Cho, K. K.</creatorcontrib><creatorcontrib>Kang, B. Y.</creatorcontrib><creatorcontrib>Lee, S. B.</creatorcontrib><creatorcontrib>Cho, B. K.</creatorcontrib><title>Quadrupolar ordering and exotic magnetocaloric effect in RB4 (R = Dy, Ho)</title><title>Scientific reports</title><addtitle>Sci Rep</addtitle><description>The interplay of charge, spin, orbital and lattice degrees of freedom has recently received great interest due to its potential to improve the magnetocaloric effect (MCE) for the purpose of magnetic cooling applications. Here, a new mechanism for a large entropy change with low magnetic fields in rare-earth tetraborides, especially for Ho
1-
x
Dy
x
B
4
(
x
= 0.0, 0.5, and 1.0), is proposed. For
x
= 0.0, 0.5, and 1.0, the maximum entropy changes of the giant inverse MCE are found to be 22.7 J/kgK, 19.6 J/kgK, and 19.0 J/kgK with critical fields of 25 kOe, 40 kOe, and 50 kOe, respectively. For all compounds, systematic study on how the entropy changes as a function of the field and temperature is performed to investigate their correlation with consecutive double transitions, i.e., the magnetic dipolar order at
T
=
T
N
and the quadrupolar order at
T
=
T
Q
(
T
Q
<
T
N
). Based on Landau theory, it is found that this behaviour is attributed to the strong coupling between magnetic dipoles and quadrupoles in the presence of strong spin-orbit coupling and geometric frustration. Our work offers new insights into both academic and industrial interests in the discovery of giant MCE with various applications for magnetic cooling systems.</description><subject>639/301/119/2795</subject><subject>639/301/119/997</subject><subject>Cooling systems</subject><subject>Entropy</subject><subject>Humanities and Social Sciences</subject><subject>Magnetic fields</subject><subject>Magnetism</subject><subject>Maximum entropy</subject><subject>multidisciplinary</subject><subject>Science</subject><subject>Science (multidisciplinary)</subject><issn>2045-2322</issn><issn>2045-2322</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>BENPR</sourceid><recordid>eNp9kc1O3DAUhS1EVRDlBVhFYgMSaf2feAESDLRUoqoYsbdunJshKBMPdlKVHdu-Zp8EzwwqhQWWLF_rfufIvoeQPUY_MyrKL1EyZcqccpqrQnOWFxtkm1Opci443_yv3iK7Md7RtBQ3kpmPZEswo6WRepv8uB6hDuPCdxAyH2oMbT_LoK8z_O2H1mVzmPU4eAedD-mKTYNuyNo-m57J7GD69_HPcdrnD0fZpT_8RD400EXcfT53yM3Xi5vJZX7189v3yelV7hQrhlwazVUpNWpaclYBUKqZrioBoCpHa0eFacqqZsARdW0cw5LqsuBGAchG7JCTte1irOZYO-yHAJ1dhHYO4cF6aO3rTt_e2pn_ZbUpeKFoMjh4Ngj-fsQ42HkbHXYd9OjHaLmQImFlIRK6_wa982Po0-9WFOXa0CJRfE254GMM2Px7DKN2mZdd52VTXnaVl12KxFoUF8upY3ixfkf1BNkJlxA</recordid><startdate>20200121</startdate><enddate>20200121</enddate><creator>Song, M. 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S. ; Cho, K. K. ; Kang, B. Y. ; Lee, S. B. ; Cho, B. K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c517t-49625846e60821baa00616bb3aa5bc0dc039f8bd1a2ee6d9c1e80687295aa4f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>639/301/119/2795</topic><topic>639/301/119/997</topic><topic>Cooling systems</topic><topic>Entropy</topic><topic>Humanities and Social Sciences</topic><topic>Magnetic fields</topic><topic>Magnetism</topic><topic>Maximum entropy</topic><topic>multidisciplinary</topic><topic>Science</topic><topic>Science (multidisciplinary)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Song, M. S.</creatorcontrib><creatorcontrib>Cho, K. K.</creatorcontrib><creatorcontrib>Kang, B. Y.</creatorcontrib><creatorcontrib>Lee, S. B.</creatorcontrib><creatorcontrib>Cho, B. K.</creatorcontrib><collection>Springer Nature OA Free Journals</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Biology Database (Alumni Edition)</collection><collection>Medical Database (Alumni Edition)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>ProQuest Biological Science Collection</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Science Database</collection><collection>Biological Science Database</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central Basic</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Scientific reports</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Song, M. S.</au><au>Cho, K. K.</au><au>Kang, B. Y.</au><au>Lee, S. B.</au><au>Cho, B. K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Quadrupolar ordering and exotic magnetocaloric effect in RB4 (R = Dy, Ho)</atitle><jtitle>Scientific reports</jtitle><stitle>Sci Rep</stitle><date>2020-01-21</date><risdate>2020</risdate><volume>10</volume><issue>1</issue><spage>803</spage><epage>803</epage><pages>803-803</pages><artnum>803</artnum><issn>2045-2322</issn><eissn>2045-2322</eissn><abstract>The interplay of charge, spin, orbital and lattice degrees of freedom has recently received great interest due to its potential to improve the magnetocaloric effect (MCE) for the purpose of magnetic cooling applications. Here, a new mechanism for a large entropy change with low magnetic fields in rare-earth tetraborides, especially for Ho
1-
x
Dy
x
B
4
(
x
= 0.0, 0.5, and 1.0), is proposed. For
x
= 0.0, 0.5, and 1.0, the maximum entropy changes of the giant inverse MCE are found to be 22.7 J/kgK, 19.6 J/kgK, and 19.0 J/kgK with critical fields of 25 kOe, 40 kOe, and 50 kOe, respectively. For all compounds, systematic study on how the entropy changes as a function of the field and temperature is performed to investigate their correlation with consecutive double transitions, i.e., the magnetic dipolar order at
T
=
T
N
and the quadrupolar order at
T
=
T
Q
(
T
Q
<
T
N
). Based on Landau theory, it is found that this behaviour is attributed to the strong coupling between magnetic dipoles and quadrupoles in the presence of strong spin-orbit coupling and geometric frustration. Our work offers new insights into both academic and industrial interests in the discovery of giant MCE with various applications for magnetic cooling systems.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>31964946</pmid><doi>10.1038/s41598-020-57621-7</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0001-7060-4158</orcidid><orcidid>https://orcid.org/0000-0003-3650-3614</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | 639/301/119/2795 639/301/119/997 Cooling systems Entropy Humanities and Social Sciences Magnetic fields Magnetism Maximum entropy multidisciplinary Science Science (multidisciplinary) |
| title | Quadrupolar ordering and exotic magnetocaloric effect in RB4 (R = Dy, Ho) |
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