Controlling of magnetocaloric effect in Gd2O3@SiO2 nanocomposites by substrate dimensionality and particles’ concentration
The magnetocaloric effect (MCE) of hybrid nanostructures consisting of fine gadolinium oxide (Gd2O3) nanoparticles with diameter 7 nm and 12 nm loaded into the pores of the periodically ordered mesoporous silica with hexagonal (SBA-15) or cubic (SBA-16) symmetry were investigated. The concentration...
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| Veröffentlicht in: | AIP advances 2018-04, Vol.8 (4), p.048105-048105-9 |
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| creator | Zeleňáková, Adriana Hrubovčák, Pavol Kapusta, Ondrej Berkutova, Anna Zeleňák, Vladimir Franco, Victorino |
| description | The magnetocaloric effect (MCE) of hybrid nanostructures consisting of fine gadolinium
oxide (Gd2O3) nanoparticles with diameter 7 nm and 12 nm loaded into
the pores of the periodically ordered mesoporous silica with hexagonal (SBA-15) or cubic
(SBA-16) symmetry were investigated. The concentration effect of the added nanoparticles
(NPs) and the effect of the silica matrix dimensionality on the structural properties,
magnetization M(H), magnetic entropy change
ΔS
M
, and parameters A(T)
and B(T) derived from Arrott plots were studied in four samples. Examined
nanocomposites exhibited reasonable high values of magnetic entropy change
ΔS
M
varying from 29 J/kgK established for
Gd2O3@SBA-15 up to 64 J/kgK observed in
Gd2O3@SBA-16 at maximal field change 5 T at low temperatures. This
suggests that studied nanocomposites, where diamagnetic silica matrices serve as
nanoreactors for growth of Gd2O3 nanoparticles and their symmetry
strongly affect magnetic properties of whole composites, could be feasible for
cryomagnetic refrigeration applications. |
| doi_str_mv | 10.1063/1.4993974 |
| format | Article |
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oxide (Gd2O3) nanoparticles with diameter 7 nm and 12 nm loaded into
the pores of the periodically ordered mesoporous silica with hexagonal (SBA-15) or cubic
(SBA-16) symmetry were investigated. The concentration effect of the added nanoparticles
(NPs) and the effect of the silica matrix dimensionality on the structural properties,
magnetization M(H), magnetic entropy change
ΔS
M
, and parameters A(T)
and B(T) derived from Arrott plots were studied in four samples. Examined
nanocomposites exhibited reasonable high values of magnetic entropy change
ΔS
M
varying from 29 J/kgK established for
Gd2O3@SBA-15 up to 64 J/kgK observed in
Gd2O3@SBA-16 at maximal field change 5 T at low temperatures. This
suggests that studied nanocomposites, where diamagnetic silica matrices serve as
nanoreactors for growth of Gd2O3 nanoparticles and their symmetry
strongly affect magnetic properties of whole composites, could be feasible for
cryomagnetic refrigeration applications.</description><identifier>ISSN: 2158-3226</identifier><identifier>EISSN: 2158-3226</identifier><identifier>DOI: 10.1063/1.4993974</identifier><identifier>CODEN: AAIDBI</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Diamagnetism ; Entropy ; Gadolinium oxides ; Magnetic properties ; Mathematical analysis ; Matrix methods ; Nanocomposites ; Nanoparticles ; Refrigeration ; Silica ; Silicon dioxide ; Substrates</subject><ispartof>AIP advances, 2018-04, Vol.8 (4), p.048105-048105-9</ispartof><rights>Author(s)</rights><rights>2017 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c428t-95165232b47b083eaae24cb238835d8c87e59d39f3f85b3d0ad9fd3cf1c39e9c3</citedby><cites>FETCH-LOGICAL-c428t-95165232b47b083eaae24cb238835d8c87e59d39f3f85b3d0ad9fd3cf1c39e9c3</cites><orcidid>0000-0003-3028-6815</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,860,2096,27901,27902</link.rule.ids></links><search><creatorcontrib>Zeleňáková, Adriana</creatorcontrib><creatorcontrib>Hrubovčák, Pavol</creatorcontrib><creatorcontrib>Kapusta, Ondrej</creatorcontrib><creatorcontrib>Berkutova, Anna</creatorcontrib><creatorcontrib>Zeleňák, Vladimir</creatorcontrib><creatorcontrib>Franco, Victorino</creatorcontrib><title>Controlling of magnetocaloric effect in Gd2O3@SiO2 nanocomposites by substrate dimensionality and particles’ concentration</title><title>AIP advances</title><description>The magnetocaloric effect (MCE) of hybrid nanostructures consisting of fine gadolinium
oxide (Gd2O3) nanoparticles with diameter 7 nm and 12 nm loaded into
the pores of the periodically ordered mesoporous silica with hexagonal (SBA-15) or cubic
(SBA-16) symmetry were investigated. The concentration effect of the added nanoparticles
(NPs) and the effect of the silica matrix dimensionality on the structural properties,
magnetization M(H), magnetic entropy change
ΔS
M
, and parameters A(T)
and B(T) derived from Arrott plots were studied in four samples. Examined
nanocomposites exhibited reasonable high values of magnetic entropy change
ΔS
M
varying from 29 J/kgK established for
Gd2O3@SBA-15 up to 64 J/kgK observed in
Gd2O3@SBA-16 at maximal field change 5 T at low temperatures. This
suggests that studied nanocomposites, where diamagnetic silica matrices serve as
nanoreactors for growth of Gd2O3 nanoparticles and their symmetry
strongly affect magnetic properties of whole composites, could be feasible for
cryomagnetic refrigeration applications.</description><subject>Diamagnetism</subject><subject>Entropy</subject><subject>Gadolinium oxides</subject><subject>Magnetic properties</subject><subject>Mathematical analysis</subject><subject>Matrix methods</subject><subject>Nanocomposites</subject><subject>Nanoparticles</subject><subject>Refrigeration</subject><subject>Silica</subject><subject>Silicon dioxide</subject><subject>Substrates</subject><issn>2158-3226</issn><issn>2158-3226</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>DOA</sourceid><recordid>eNqdkc1qGzEQx5eSQEOSQ95A0FMDTlYarVe6NZg0CQR8aHIW-jQya81WkguGHvIafb0-STexSXvuXGYYfvOfr6a5oO0VbedwTa-4lCB7_qE5YbQTM2BsfvRP_LE5L2XdTsYlbQU_aX4uMNWMwxDTimAgG71KvqLVA-ZoiQ_B20piIneOLeHLt7hkJOmEFjcjllh9IWZHytaUmnX1xMWNTyVi0kOsO6KTI6PONdrBl98vv4jFZH16ZSfmrDkOeij-_OBPm-evt0-L-9nj8u5hcfM4s5yJOpMdnXcMmOG9aQV4rT3j1jAQAjonrOh9Jx3IAEF0BlyrnQwObKAWpJcWTpuHva5DvVZjjhuddwp1VG8JzCt1mFGxYIDLYPoAgnPGNaMSTOuNc13f027S-rTXGjN-3_pS1Rq3eVq3KEbpfLrsVDdRn_eUzVhK9uG9K23V668UVYdfTezlni021re7_B_8A_NfUI0uwB-K8KSF</recordid><startdate>201804</startdate><enddate>201804</enddate><creator>Zeleňáková, Adriana</creator><creator>Hrubovčák, Pavol</creator><creator>Kapusta, Ondrej</creator><creator>Berkutova, Anna</creator><creator>Zeleňák, Vladimir</creator><creator>Franco, Victorino</creator><general>American Institute of Physics</general><general>AIP Publishing LLC</general><scope>AJDQP</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0003-3028-6815</orcidid></search><sort><creationdate>201804</creationdate><title>Controlling of magnetocaloric effect in Gd2O3@SiO2 nanocomposites by substrate dimensionality and particles’ concentration</title><author>Zeleňáková, Adriana ; Hrubovčák, Pavol ; Kapusta, Ondrej ; Berkutova, Anna ; Zeleňák, Vladimir ; Franco, Victorino</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c428t-95165232b47b083eaae24cb238835d8c87e59d39f3f85b3d0ad9fd3cf1c39e9c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Diamagnetism</topic><topic>Entropy</topic><topic>Gadolinium oxides</topic><topic>Magnetic properties</topic><topic>Mathematical analysis</topic><topic>Matrix methods</topic><topic>Nanocomposites</topic><topic>Nanoparticles</topic><topic>Refrigeration</topic><topic>Silica</topic><topic>Silicon dioxide</topic><topic>Substrates</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zeleňáková, Adriana</creatorcontrib><creatorcontrib>Hrubovčák, Pavol</creatorcontrib><creatorcontrib>Kapusta, Ondrej</creatorcontrib><creatorcontrib>Berkutova, Anna</creatorcontrib><creatorcontrib>Zeleňák, Vladimir</creatorcontrib><creatorcontrib>Franco, Victorino</creatorcontrib><collection>AIP Open Access Journals</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>AIP advances</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zeleňáková, Adriana</au><au>Hrubovčák, Pavol</au><au>Kapusta, Ondrej</au><au>Berkutova, Anna</au><au>Zeleňák, Vladimir</au><au>Franco, Victorino</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Controlling of magnetocaloric effect in Gd2O3@SiO2 nanocomposites by substrate dimensionality and particles’ concentration</atitle><jtitle>AIP advances</jtitle><date>2018-04</date><risdate>2018</risdate><volume>8</volume><issue>4</issue><spage>048105</spage><epage>048105-9</epage><pages>048105-048105-9</pages><issn>2158-3226</issn><eissn>2158-3226</eissn><coden>AAIDBI</coden><abstract>The magnetocaloric effect (MCE) of hybrid nanostructures consisting of fine gadolinium
oxide (Gd2O3) nanoparticles with diameter 7 nm and 12 nm loaded into
the pores of the periodically ordered mesoporous silica with hexagonal (SBA-15) or cubic
(SBA-16) symmetry were investigated. The concentration effect of the added nanoparticles
(NPs) and the effect of the silica matrix dimensionality on the structural properties,
magnetization M(H), magnetic entropy change
ΔS
M
, and parameters A(T)
and B(T) derived from Arrott plots were studied in four samples. Examined
nanocomposites exhibited reasonable high values of magnetic entropy change
ΔS
M
varying from 29 J/kgK established for
Gd2O3@SBA-15 up to 64 J/kgK observed in
Gd2O3@SBA-16 at maximal field change 5 T at low temperatures. This
suggests that studied nanocomposites, where diamagnetic silica matrices serve as
nanoreactors for growth of Gd2O3 nanoparticles and their symmetry
strongly affect magnetic properties of whole composites, could be feasible for
cryomagnetic refrigeration applications.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4993974</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0003-3028-6815</orcidid><oa>free_for_read</oa></addata></record> |
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| source | DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection; Free Full-Text Journals in Chemistry |
| subjects | Diamagnetism Entropy Gadolinium oxides Magnetic properties Mathematical analysis Matrix methods Nanocomposites Nanoparticles Refrigeration Silica Silicon dioxide Substrates |
| title | Controlling of magnetocaloric effect in Gd2O3@SiO2 nanocomposites by substrate dimensionality and particles’ concentration |
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